Definition: Given a negotiation between two participants, answer 'Yes' if both participants agree to the deal, otherwise answer 'No'.
Input: THEM: hi, i would like the book and 2 hats, i can give you 1 hat and the 2 balls in exchange YOU: how about i have the book and one other object of your choice? THEM: i'm open to that, would you take 2 hats and the 2 balls instead though? YOU: no, i need the book, or else we cannot make a deal. THEM: okay you can have the book and 1 ball YOU: deal.
Output:
Yes