本内容来自开口英语课程：实用旅游英语，报名请联系Ryan A: Do you have baggage to check in? B: Yes, I have a suitcase and a briefcase. A: All right. Plaese put them on the scale. B: OK. I think it weighs about 25 kilograms. Is it overweight? A: No. It weighs 30 kilograms and the allowance is 50 kilograms. B: OK, could I take this briefcase sa my hand baggage?. A: That&`&s right. B: Oh, by the way, I have already earned nearly 20,000 air miles. Can I upgrade to business class? A: Sorry, there are no available business-class seats today. If you&`&d like, I will put you on the list for the return trip, though. B: That will be great.