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: F: Canadian airline, can I help you? ,M: Hello, I'd like to make sure if my flight. ,F: May I have your flight number please? ,M: Yes, it's number 385, leaving Beijing at 10:00 in the morning on May twentieth.
(A) F: Ok, please hold the line while I check for you. (B) F: That's right. You are flying American airlines. (C) F: Don't worry, your train doesn't leave Nanjing until 20:00. (D) F: I am really sorry, I did not catch that. Would you slow down, please?

A