Given the task definition and input, reply with output. Given a negotiation between two participants, answer 'Yes' if both participants agree to the deal, otherwise answer 'No'.

THEM: i would like both balls.  YOU: could you get by with just one of them?  THEM: ok, i will take one ball and both books.  YOU: how about you take both balls and i take the rest.  THEM: deal.

Yes