TASK DEFINITION: Given a negotiation between two participants, answer 'Yes' if both participants agree to the deal, otherwise answer 'No'.
PROBLEM: THEM: hello 2 balls for me please  YOU: okay.

SOLUTION: Yes

PROBLEM: THEM: both books to me, the rest to you  YOU: deal.

SOLUTION: Yes

PROBLEM: THEM: how about two books and the ball for me?  YOU: no deal  THEM: what do you want  YOU: the ball and hat  THEM: deal  YOU: you take the books i get the hat and ball  THEM: agree  YOU: thx.

SOLUTION:
Yes

