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: I'd like to book a flight to New York, please. ,F: Certainly sir, what date? ,M: May first. ,F: May first. Single or return? ,M: Return, please. I'd like a direct flight if possible. ,F: Sure, what class do you like? ,M: Economy class will be fine.
(A) F: Excuse me, could you repeat the question? (B) F: Here's the return ticket for you, business class, leaving on May 11th. (C) F: I've booked the single ticket for you to Boston on May 1st, sir. (D) F: OK. A return economy class ticket to and from New York, right?

D