填写句子完成对话。
A: ______________________________________________________________?
B: I’m visiting my grandmother for vacation.
A: ______________________________________________________________?
B: She lives in Tianjin.
A: _____________________________________________________________?
B: It takes about six hours to get there by train.
A: ______________________________________________________________?
B: I’m leaving on Friday.
A: How long are you staying there?
B: About two weeks.
A: Have a good time.
B: ___________________________________________.