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: Hello, this is Katrina Travel Agency. May I help you? ,M: Yes, this is Edgar. I'll have a holiday. And I'm thinking about traveling abroad with my parents. Can you give me some advice? ,F: Of course. May I ask how long you will plan to travel. ,M: About a week.
(A) F: It's enough for your friends to travel abroad for ten days. (B) F: Seven days is good choice. Your parents must have a happy time. (C) F: I’m sorry, I don’t understand. Could you say it again? (D) F: You are so happy that you can travel alone for five days.

B