Task: Dialogue Generation
Input (English): M: Oh, madam, what can I do for you? ,F: I'm sorry to say the bill you sent me was incorrect. ,M: Incorrect, madam? That's very strange. ,F: Yes, I know. And what's more, this isn't the first time
(A) M: I'm so sorry, madam, and I promise I won't send you the incorrect bills again. (B) M: I apologize for that I sent your bill to the wrong address, fortunately the bills are correct. (C) M: I'm sorry for that the bill is not clear enough, madam,  but I'm happy that the bills are correct. (D) M: I didn’t hear you. Please could you tell me again?
Output (English): A