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: Yes. Welcome to DM Sliders. We're a family owned bike shop.

SOLUTION: OK, never mind. I'm just going to go. I'm having problems with my family, so when I hear the word "family" it kind of makes me not want to spend my money here.

PROBLEM: Bartal, if I don't hear this little new shit, Mindy sing within the next 30 seconds, I am going to explode. You better get her singing.

SOLUTION: I will. Welcome aboard, Miss Cynthia. It's great to have you finally be southern.

PROBLEM: You know those little tiny ponies that help people out? They give them little sneakers and I thought it looked pretty cool.

SOLUTION:
They sound wonderful. I've never left Alabama.