Answer: Bill: Hi, Ben where are you going?
Ben: Hi Bill, I am flying to China later this afternoon.
Bill: Are you going for business or pleasure?
Ben: Business, I am meeting some engineers tomorrow in Shanghai.
Bill: How long are you staying there?
Ben: I am staying for 3 weeks and then I am flying to Korea I will stay in Korea until the end of the year and then I will come back.
Bill: Will this be your first overseas trip?
Ben: No, I went to Indonesia last year and the year before.
Explanation: Correct tense needs to be used to complete the dialogues.