Definition: Given a negotiation between two participants, answer 'Yes' if both participants agree to the deal, otherwise answer 'No'.
Input: THEM: i can offer the ball and 1 book  YOU: i need the ball and the hats and you can have the books  THEM: i can't give the hats, i can offer the ball and both books  YOU: okay so i will get the ball and the two books and you will get the hats?  THEM: correct  YOU: okay great!
Output:
Yes