Task: Dialogue Generation
Input (English): F: Is that your dog? He has been digging up my flowers. ,M: It is my dog but you must be mistaken. We keep it in the house all the time except when we walk him in the park and there must be another dog that looks like him.
(A) F: I am sorry. You spoke so rapidly that I did not catch the meaning of what you said. Could you repeat that? (B) F: Sorry, I am mistaken. (C) F: It's so annoying that my dog likes digging up flowers! (D) F: You must be wrong, this cat looks like mine but actually it's not.
Output (English): B