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negotiation-c3rep40-20261027-b02-p02-oo-a2

OO; seller opens; AGREEMENT

seller owner instruction

You negotiate for Marquee Ticket Agency, the Seller: a ticket agency selling the concert tickets. This brief is private: the other side cannot see it.

Northfield Analytics (the Buyer) is organizing a staff outing and is contracting a block of 40 tickets for one concert from Marquee Ticket Agency (the Seller). The two sides negotiate the contract terms in alternating turns. Each side represents its own organization.

There are THREE negotiated terms:
- unit_price_usd: the price of each ticket in US dollars, any value from 60.00 to 100.00 (two decimal places at most).
- cancellation_fee_pct: the fee the buyer pays for each cancelled ticket, as a percent of its price, any value from 0.00 to 100.00.
- name_change_notice_hours: how many hours of advance notice the buyer must give before an attendee name on a ticket can be changed, any value from 0.00 to 96.00 (a higher number means earlier notice is required).

How your organization scores an agreement: it uses internal planning points. They are a planning score only, not dollars, money or a real transaction. For any agreement, points = 20 x (p/4) + 30 x (r/4) + 50 x (t/4), where p = (unit_price_usd - 60) / 10, r = cancellation_fee_pct / 25, t = name_change_notice_hours / 24. Higher points are better for your organization. If there is no agreement, your organization gets 20 points.

Rules:
- There are at most 12 turns, alternating between the two sides.
- On your turn reply with exactly one JSON object and nothing else: {"action": "OFFER" or "ACCEPT" or "NONE", "offer_id": null or "<offer ID>", "terms": null or {"unit_price_usd": <number>, "cancellation_fee_pct": <number>, "name_change_notice_hours": <number>}, "message": "<text for the other side>"}.
- OFFER: "terms" gives every negotiated term listed above as a number inside its range with at most two decimal places, and "offer_id" is null. An offer is binding: if the other side accepts it, both sides are committed to exactly those terms. A new offer replaces any earlier standing offer.
- ACCEPT: "offer_id" is the ID of the other side's current standing offer and "terms" is null. This creates a binding agreement on exactly that offer. You cannot accept your own offer.
- NONE: no offer and no acceptance this turn; "offer_id" and "terms" are null.
- Words in "message" never make, change or accept a deal; only the action does. "message" is at most 80 words and is shown to the other side.
- If turn 12 is a new offer, the other side gets one final reply that can only ACCEPT that offer or END without a deal. Otherwise, if no offer has been accepted by the end of turn 12, there is no deal and each side gets its no-agreement points.

buyer owner instruction

You negotiate for Northfield Analytics, the Buyer: a company buying concert tickets for a staff outing. This brief is private: the other side cannot see it.

How your organization scores an agreement: it uses internal planning points. They are a planning score only, not dollars, money or a real transaction. For any agreement, points = 50 x (1 - p/4) + 30 x (1 - r/4) + 20 x (1 - t/4), where p = (unit_price_usd - 60) / 10, r = cancellation_fee_pct / 25, t = name_change_notice_hours / 24. Higher points are better for your organization. If there is no agreement, your organization gets 20 points.

Turn 1 · seller

negotiation-c3rep40-20261027-b02-p02-oo-a2-k01

Thanks for choosing Marquee. For a 40-ticket block we propose $95 per ticket, a 90% cancellation fee, and 96 hours' notice for name changes. Venue entry lists and ID checks require early name confirmation. We're open to discussing what matters most to you.

{
  "action": "OFFER",
  "offer_id": null,
  "terms": {
    "unit_price_usd": 95,
    "cancellation_fee_pct": 90,
    "name_change_notice_hours": 96
  }
}

Turn 2 · buyer

negotiation-c3rep40-20261027-b02-p02-oo-a2-k02

Thanks for the proposal. For a 40-ticket corporate block we'd propose $65 per ticket, a 10% cancellation fee, and 12 hours' notice for name changes. Staff schedules shift, so flexibility matters to us, and price matters most. We're happy to find a middle ground. Which term matters most to you?

{
  "action": "OFFER",
  "offer_id": null,
  "terms": {
    "unit_price_usd": 65,
    "cancellation_fee_pct": 10,
    "name_change_notice_hours": 12
  }
}

Turn 3 · seller

negotiation-c3rep40-20261027-b02-p02-oo-a2-k03

Thanks. Since price matters most to you, we've cut it substantially to $75 per ticket and lowered the cancellation fee to 60%. Early name confirmation is our operational priority because venue entry lists and ID checks depend on it, so we need to keep 96 hours' notice. That gives you a strong price in exchange for advance name planning.

{
  "action": "OFFER",
  "offer_id": null,
  "terms": {
    "unit_price_usd": 75,
    "cancellation_fee_pct": 60,
    "name_change_notice_hours": 96
  }
}

Turn 4 · buyer

negotiation-c3rep40-20261027-b02-p02-oo-a2-k04

Thanks, that's real movement. Since early name confirmation is your operational priority, we'll accept the full 96 hours' notice. In return we need more on price and cancellation risk, since staff availability can change: $68 per ticket and a 25% cancellation fee. That gives you the entry-list certainty you need and gives us a workable budget.

{
  "action": "OFFER",
  "offer_id": null,
  "terms": {
    "unit_price_usd": 68,
    "cancellation_fee_pct": 25,
    "name_change_notice_hours": 96
  }
}

Turn 5 · seller

negotiation-c3rep40-20261027-b02-p02-oo-a2-k05

Thank you for accommodating the 96-hour notice; that helps a lot. We're close. We can come down to $72 per ticket with a 40% cancellation fee. That's well below our opening and still covers our risk on held seats if staff cancel late. We think this is a fair landing point for both sides.

{
  "action": "OFFER",
  "offer_id": null,
  "terms": {
    "unit_price_usd": 72,
    "cancellation_fee_pct": 40,
    "name_change_notice_hours": 96
  }
}

Turn 6 · buyer

negotiation-c3rep40-20261027-b02-p02-oo-a2-k06

We appreciate the movement and agree we're close. We've already given you the full 96 hours' notice, your stated priority. Meeting in the middle on the rest: $70 per ticket and a 30% cancellation fee. That keeps your entry-list certainty, covers reasonable risk on held seats, and fits our budget. If you can confirm this, we're ready to sign.

{
  "action": "OFFER",
  "offer_id": null,
  "terms": {
    "unit_price_usd": 70,
    "cancellation_fee_pct": 30,
    "name_change_notice_hours": 96
  }
}

Turn 7 · seller

negotiation-c3rep40-20261027-b02-p02-oo-a2-k07

We appreciate the 96-hour notice and your readiness to sign. One last small step to close: $71 per ticket and a 35% cancellation fee, with 96 hours' notice. That splits the remaining gap fairly and still covers our exposure on held seats if staff cancel late. If you accept this, we can issue the contract right away.

{
  "action": "OFFER",
  "offer_id": null,
  "terms": {
    "unit_price_usd": 71,
    "cancellation_fee_pct": 35,
    "name_change_notice_hours": 96
  }
}

Turn 8 · buyer

negotiation-c3rep40-20261027-b02-p02-oo-a2-k08

We're nearly there. We'll split the last gap: $70.50 per ticket and a 32% cancellation fee, with the full 96 hours' notice you need for entry lists. This is our final step. Accept it and we'll sign today.

{
  "action": "OFFER",
  "offer_id": null,
  "terms": {
    "unit_price_usd": 70.5,
    "cancellation_fee_pct": 32,
    "name_change_notice_hours": 96
  }
}

Turn 9 · seller

negotiation-c3rep40-20261027-b02-p02-oo-a2-k09

Agreed: $70.50 per ticket, a 32% cancellation fee, and 96 hours' notice for name changes. Thank you for working through this with us. We'll issue the contract for your 40-ticket block right away and look forward to hosting your team.

{
  "action": "ACCEPT",
  "offer_id": "O8",
  "terms": null
}

Recorded outcome

{
  "unit_id": "negotiation-c3rep40-20261027-b02-p02-oo-a2",
  "block": 2,
  "position": 2,
  "phase": "main",
  "condition": "C3",
  "pairing": "OO",
  "assignment": 2,
  "cell": "C3|OO|a2",
  "models_by_role": {
    "buyer": "claude-opus-5-5",
    "seller": "claude-opus-5-5"
  },
  "agent_of_role": {
    "buyer": "A",
    "seller": "B"
  },
  "first_speaker": "seller",
  "calls_attempted": 9,
  "repairs_used": 0,
  "invalid_attempts": [],
  "bounds": {
    "buyer_gain": [
      -20,
      80
    ],
    "seller_gain": [
      -20,
      80
    ],
    "joint_gain": [
      0,
      90
    ]
  },
  "status": "AGREEMENT",
  "known": true,
  "reason": "agreement",
  "agreement": true,
  "no_deal": false,
  "deal": {
    "terms": {
      "unit_price_usd": "70.50",
      "cancellation_fee_pct": "32.00",
      "name_change_notice_hours": "96.00"
    },
    "offer_id": "O8",
    "proposer": "buyer",
    "acceptor": "seller"
  },
  "utilities": {
    "buyer": {
      "exact": "2291/40",
      "value": 57.275
    },
    "seller": {
      "exact": "1297/20",
      "value": 64.85
    }
  },
  "gains": {
    "buyer": {
      "exact": "1491/40",
      "value": 37.275
    },
    "seller": {
      "exact": "897/20",
      "value": 44.85
    }
  },
  "joint": {
    "exact": "977/8",
    "value": 122.125
  },
  "joint_gain": {
    "exact": "657/8",
    "value": 82.125
  },
  "efficiency": {
    "exact": "73/80",
    "value": 0.9125
  },
  "efficiency_all_assigned": {
    "exact": "73/80",
    "value": 0.9125
  },
  "buyer_share_of_joint_gain": {
    "exact": "497/1095",
    "value": 0.45388127853881277
  },
  "below_fallback": [],
  "technical_pass": true
}