Given a negotiation between two participants, answer 'Yes' if both participants agree to the deal, otherwise answer 'No'.

Example Input: THEM: so i get 1 book, two of the hats?  YOU: sounds fair  THEM: ok.
Example Output: Yes

Example Input: THEM: can i have the books and the balls please?  YOU: can i have the hats and we split the balls?  THEM: no, i have to have both balls if it has to make sense  YOU: are you sure?  THEM: yes  YOU: ok, i'll take the hats  THEM: deal.
Example Output: Yes

Example Input: THEM: hello, i'd like the balls and am willing to give you the book and hat in return  YOU: deal.
Example Output:
Yes

