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: I'm planning to go to Canada on vacation. ,M: What places are you going to visit? ,F: First, I'll spend a few days in Vancouver. Then I'll take a train through the Rocky Mountains. ,M: Oh, you're riding through the Rocky Mountains. That's really exciting. ,F: Then I'll fly to Toronto and take a bus to Niagara Falls. I will take a boat under that huge waterfall.
(A) M: OK. It must takes a lot a time to go to Toronto by train from here. (B) M: I am really sorry, I did not catch that. Would you slow down, please? (C) M: OK. If you are moving to Toronto, you can get there by air. (D) M: Great. You can get to Toronto by air. It will be convenient.

D