Dialogue 2 A. a vailable B. stand-by ticket counter C. next 4 carriages D. keep you waiting E. an economy-class seat F. pay the balance H. upgrade I. go straight J. service fee Passenger: Excuse me, Ms. Crew: Hello, sir. What can I do for you? Passenger: My seat is 1 . I wander if I can 2 it to a first-class seat. Crew: Wait a moment,sir . Let me ask the conductor if there are still some first-class seats 3 . A moments later Crew: Sorry to 4 . There are still some first-class seats available. The is 5 in Carriage8. Please 6 and pass the 7 . The conductor of this train is there and you have to upgrade your class from him. Passenger: I see. Thank you. Crew: You ’ re welcome. By the way, yo u need to 8 and the 9 .