Definition: In this task you are given a small conversation between two persons and 4 options on how the conversation should continue. Your job is to choose the most reasonable option. The conversation and the options are separated by a newline character. Each dialogue in the conversation are separated by a comma. F and M indicate female and male, respectively.
Input: M: Yes, Madam. Can I help you? ,F: I hope so. I'd like to ask about flights from Beijing to London, please.
(A) M: I am afraid I did not quite catch what you were saying. Please repeat it. (B) M: This is a big a department store. What do you want to buy? (C) M: Why do you ask about the flight from Beijing to Paris? (D) M: What do you want to order sir?

A