Part 1. Definition
Given a negotiation between two participants, answer 'Yes' if both participants agree to the deal, otherwise answer 'No'.
Part 2. Example
THEM: i need the hats and the ball  YOU: i can give you one hat and the ball. i want 2 books and 1 hat  THEM: i have to have both hats and the ball or both hats and a book to make a deal  YOU: sorry, i won`t make a deal without a hat  THEM: if you take 1 hat i have to have everything else  YOU: sorry can`t do  THEM: no deal  YOU: yesh no deal, sorry  THEM: no deal  YOU: no deal.
Answer: No
Explanation: Both participants do not agree to the deal, so the answer is No.
Part 3. Exercise
THEM: i'd like one hat and one book please  YOU: i would like all except hat.  THEM: i need one hat and one book, sorry  YOU: hat, 2 books & 1 ball for me.  THEM: no, sorry, i'll take three books, the rest to you  YOU: i am not sure we can agree on anything  THEM: ok, it appears so  YOU: i'll go down to you having hat & 1 ball  THEM: deal.
Answer:
Yes