TASK DEFINITION: Given a negotiation between two participants, answer 'Yes' if both participants agree to the deal, otherwise answer 'No'.
PROBLEM: THEM: i'll take the books? YOU: ok. i'll take 1 hat and the ball. you take two books and a hat?

SOLUTION: Yes

PROBLEM: THEM: hi, i would like the book and hats and you can have the ball YOU: i need the book at least THEM: i cant let go of the book. how about you get the ball and 1 hat? YOU: hats have zero value for me THEM: sorry then i guess we cant make a deal YOU: sorry. THEM: no dea ; YOU: yeah, zorry THEM: no worries YOU: thanks.

SOLUTION: No

PROBLEM: THEM: i'd love to have that ball. the ball and two hats. YOU: can't do that, you can have ball and one book THEM: sounds fine to me. deal. YOU: deal.

SOLUTION:
Yes