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?
I'm visiting my friend in Hong Kong.
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.