You will be given a definition of a task first, then some input of the task.
Given a negotiation between two participants, answer 'Yes' if both participants agree to the deal, otherwise answer 'No'.

THEM: i'd like books.  YOU: do you really need all 3?  THEM: balls are 0. hat is 1.  YOU: there is no way i can beat 9, so i'll give you 3 books.
Output:
Yes