Dear XX,
It has been a long time since we met last year.I have been working in a trading company since we departed last time.My main duties are on clerical work using computer applications.It is quite boring.Hence I plan to have a vacation this summer for two weeks.I intend to visit Beijing and Shanghai during these two weeks.I am working on the places to visit and where to stay.
It will be my pleasure to have your accompany during the vacation.We can chat again and see beautiful scenery together.Please let me know if you will be available during the first two weeks of July for the trip?
I look forward to your reply soon.
Yours sincerely
YYYY