TASK DEFINITION: Given the sentence, generate "yes, and" response. "Yes, and" is a rule-of-thumb in improvisational comedy that suggests that a participant in a dialogue should accept what another participant has stated ("Yes") and then expand on that line of thought or context ("and..."). 1 In short, a "Yes, and" is a dialogue exchange in which a speaker responds by adding new information on top of the information/setting that was constructed by another speaker. Note that a "Yes, and" does not require someone explicitly saying 'yes, and...' as part of a dialogue exchange, although it could be the case if it agrees with the description above. There are many ways in which a response could implicitly/explicitly agree to the prompt without specifically saying 'yes, and...'. 
PROBLEM: Next up, Amos. It's your turn to sing.

SOLUTION: Surprise! Here comes Amos. Amos is going to sing that famous old song "Anybody Here Remember How To Jitterbug?"

PROBLEM: I hope the Rush concert starts soon.

SOLUTION: I hope so too. I don't want to get caught in traffic on the way home to Canada.

PROBLEM: Oh, well, welcome to Cold Stone.

SOLUTION:
Hey look, I know that you make your ice cream on a stone. Can I get some of that stone in the ice cold ice cream?