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 2 books, you can have the rest YOU: can i have one of the books if you get one hat? THEM: hats have a value of 0 on my side YOU: okay, we will go with what you originally said. THEM: cool!

SOLUTION: Yes

PROBLEM: THEM: balls and hats for me YOU: can i have one ball and the book? THEM: yes deal.

SOLUTION: Yes

PROBLEM: THEM: if i can have the ht and the ball you can have the books YOU: so you would like one hat and one ball? THEM: yes YOU: deal THEM: great! thank you!

SOLUTION:
Yes