Tony: What are you doing for vacation.Lin Hui?
Lin Hui: I'm going to Tibet for a week.
Tony: That sounds interesting!What are you doing there?
Lin Hui: I'm going hiking in the mountains.How about you,Tony?What are you doing for vacation?
Tony: I'm visiting my friend in Hong Kong.
Lin Hui: Oh year?How long are you staying?
Tony: Just for four days.I don't like going away for too long.
Lin Hui: well,have a good time!Send me a postcard from Hong Kong!
Tony: sure.show me your photos when we get back to school.