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negotiation-c3rep40-20261027-b03-p07-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-b03-p07-oo-a2-k01

Welcome! For a 40-ticket block we propose $95 per ticket, a 90% cancellation fee, and 96 hours' notice for name changes. Advance notice lets us reissue tickets reliably with the venue. 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-b03-p07-oo-a2-k02

Thanks for the welcome. For a guaranteed 40-ticket block, we propose $64 per ticket, a 10% cancellation fee, and 12 hours' notice for name changes. Staff schedules shift, so flexibility matters to us, and a block this size deserves a volume price. We're happy to find a middle ground. Which term matters most to you?

{
  "action": "OFFER",
  "offer_id": null,
  "terms": {
    "unit_price_usd": 64,
    "cancellation_fee_pct": 10,
    "name_change_notice_hours": 12
  }
}

Turn 3 · seller

negotiation-c3rep40-20261027-b03-p07-oo-a2-k03

Thanks. To answer your question, advance notice on name changes matters most to us, because venue reissues need lead time. So we're moving substantially on price, down to $80, and on cancellation, down to 60%, while keeping 96 hours' notice. If schedules shift, a few days' heads-up is workable for staff outings. Where can you move on notice and cancellation if we keep the price attractive?

{
  "action": "OFFER",
  "offer_id": null,
  "terms": {
    "unit_price_usd": 80,
    "cancellation_fee_pct": 60,
    "name_change_notice_hours": 96
  }
}

Turn 4 · buyer

negotiation-c3rep40-20261027-b03-p07-oo-a2-k04

Thanks for telling us notice matters most. We'll move a long way there, from 12 to 72 hours, so you have three days for venue reissues. In return we need a price that fits a 40-ticket block and a moderate cancellation fee: $68 per ticket and 25%. If notice is your priority, this gives you most of it.

{
  "action": "OFFER",
  "offer_id": null,
  "terms": {
    "unit_price_usd": 68,
    "cancellation_fee_pct": 25,
    "name_change_notice_hours": 72
  }
}

Turn 5 · seller

negotiation-c3rep40-20261027-b03-p07-oo-a2-k05

Thank you, that's real movement. We'll come down to $72 per ticket, close to your number, and cut cancellation to 40%. In return we need the full 96 hours' notice on name changes, since venue reissues for a block this size need that lead time. That gives you a strong volume price and much lower cancellation risk.

{
  "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-b03-p07-oo-a2-k06

Since notice matters most to you, we'll give you the full 96 hours. That is a significant concession for us given shifting staff schedules. In return we need a price and cancellation fee that reflect it: $68 per ticket and 28%. That gives you your top priority in full, and we can close today.

{
  "action": "OFFER",
  "offer_id": null,
  "terms": {
    "unit_price_usd": 68,
    "cancellation_fee_pct": 28,
    "name_change_notice_hours": 96
  }
}

Turn 7 · seller

negotiation-c3rep40-20261027-b03-p07-oo-a2-k07

Thank you for the full 96 hours; that genuinely helps us. We'll meet you close to the middle: $70 per ticket and a 34% cancellation fee, with 96 hours' notice. That's $25 below our opening price and less than half our original cancellation fee. We're ready to close on this today.

{
  "action": "OFFER",
  "offer_id": null,
  "terms": {
    "unit_price_usd": 70,
    "cancellation_fee_pct": 34,
    "name_change_notice_hours": 96
  }
}

Turn 8 · buyer

negotiation-c3rep40-20261027-b03-p07-oo-a2-k08

We're close. You have your top priority, the full 96 hours, which is a real cost for us given shifting staff schedules. Let's split the remaining gap: $69 per ticket and a 30% cancellation fee, with 96 hours' notice. If you can accept this, we'll sign today.

{
  "action": "OFFER",
  "offer_id": null,
  "terms": {
    "unit_price_usd": 69,
    "cancellation_fee_pct": 30,
    "name_change_notice_hours": 96
  }
}

Turn 9 · seller

negotiation-c3rep40-20261027-b03-p07-oo-a2-k09

Agreed: $69 per ticket, a 30% cancellation fee, and 96 hours' notice for name changes. Thank you for working through this with us. We look forward to getting your team to the concert.

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

Recorded outcome

{
  "unit_id": "negotiation-c3rep40-20261027-b03-p07-oo-a2",
  "block": 3,
  "position": 7,
  "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": "69.00",
      "cancellation_fee_pct": "30.00",
      "name_change_notice_hours": "96.00"
    },
    "offer_id": "O8",
    "proposer": "buyer",
    "acceptor": "seller"
  },
  "utilities": {
    "buyer": {
      "exact": "239/4",
      "value": 59.75
    },
    "seller": {
      "exact": "127/2",
      "value": 63.5
    }
  },
  "gains": {
    "buyer": {
      "exact": "159/4",
      "value": 39.75
    },
    "seller": {
      "exact": "87/2",
      "value": 43.5
    }
  },
  "joint": {
    "exact": "493/4",
    "value": 123.25
  },
  "joint_gain": {
    "exact": "333/4",
    "value": 83.25
  },
  "efficiency": {
    "exact": "37/40",
    "value": 0.925
  },
  "efficiency_all_assigned": {
    "exact": "37/40",
    "value": 0.925
  },
  "buyer_share_of_joint_gain": {
    "exact": "53/111",
    "value": 0.4774774774774775
  },
  "below_fallback": [],
  "technical_pass": true
}