TASK DEFINITION: Given a negotiation between two participants, answer 'Yes' if both participants agree to the deal, otherwise answer 'No'.
PROBLEM: THEM: i want the ball and two books YOU: would you accept taking all the books instead? THEM: hmm, really wan that ball YOU: ok, would you give me the ball and take everything else? don't think i can do anything else. THEM: yes.

SOLUTION: Yes

PROBLEM: THEM: hi there. i'd like a hat and a book, thank you much. YOU: deal THEM: gracias!

SOLUTION: Yes

PROBLEM: THEM: i'd like the book and hat and we can split the balls. YOU: you can have the book. can i have the hat & the balls? THEM: i'll take the book. you take the hat and we split the balls. good? YOU: can i have 3 balls? THEM: no. that won't work for me. we'd have to split them. YOU: then i'll take the book & 1 ball? deal? THEM: deal. YOU: thanks THEM: thank you, too!

SOLUTION:
Yes