补全对话。 A: What can l do for you, sir? B: 1 A: Could you tell me when you would like to fly? B: On the l0th of next month. A: The l0th? Just a minute, please. I have to check the computer. Hmm, I'm sorry. 2 What about the 9th? B: The 9th? No, I can't leave before the l0th. What about the l l th? A: Let me see. 3 B: What's the night number? A: Flight number? It's HU703. B: HU703. 4 A: Yes, that's half past four in the afternoon. One-way or round-trip? B: One-way. A: How many seats, please? B: 5 A: OK. I'll get them for you at once. A: Certainly. You can help me. B: Yes, we have a flight on the l l th. C. Yes, please. I'd like to book two tickets to Hong Kong. D: You have to wait for about an hour. E. It leaves Haikou at l6:30, doesn't it? F: We don't have any flights to Hong Kong that day. G. I'd like two seats, please. 1._____ 2._____ 3._____ 4._____ 5._____