instruction:
Given a negotiation between two participants, answer 'Yes' if both participants agree to the deal, otherwise answer 'No'.
question:
THEM: hello, i need to obtain the hat and am willing to give you the books and balls in return. YOU: yucky deal, but i suppose its fair enough.. deal.
answer:
Yes

question:
THEM: i keep the book you get the rest YOU: deal THEM: deal.
answer:
Yes

question:
THEM: hi YOU: hello, i need 2 hats and the book THEM: well i need one of each. YOU: no deal perhaps? THEM: well how about i take a book and a ball and you have the rest? YOU: ok.
answer:
Yes