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: Vince, this is my ex-husband, John. He's a miserable failure.

SOLUTION: This is Johnny? Oh, Betsy, he's not what I pictured. You couldn't do better than this loser?

PROBLEM: Is this your first time at a Phish concert?

SOLUTION: It is. But I'm not actually inside the concert yet.

PROBLEM: I'll give you 20 million dollars for a 1% stake in this business.

SOLUTION:
Wow, that is way over my asking price. I have to go with you.