Task: Dialogue Generation
Input (English): M: I'd like to buy a flight ticket for this afternoon. ,F: Alright. To Washington or to New York? ,M: To New York, please.
(A) F: Here is your ticket to Washington for tomorrow afternoon. (B) F: Sorry. The tickets to New York for this afternoon have been sold out. (C) F: I am afraid I did not quite catch what you were saying. Please repeat it. (D) F: I'm sorry. The tickets to Chicago for today have been sold out.
Output (English): B