A: I'd like to return these pants. I got them from a friend of mine as a birthday present, but they were kind of（有点儿） too tight around the waist（腰）.

B: Would you like an exchange（交换）, Ma'am?

A: Sure. That would be nice.

B: Do you still have your receipt?

A: Yes, here you are.

B: Perfect! Why don't you go ahead (前进) and start looking for the pants you want?

A: Cool! Thank you.

B: We'll see you back here.