Task: Dialogue Generation
Input (English): F: Hello, I'd like to return this sweater. I have the receipt right here. ,M: OK, let me take a look. Uh, so you bought this over a month ago. ,F: That's right. It was a birthday present for my niece.
(A) M: Why do you return this sweater you bought for your niece? (B) M: Why do you return this sweater you bought for your friend? (C) M: Excuse me, could you repeat the question? (D) M: Why do you have to return the sweater? It looks great on you.
Output (English): A