补全对话

A：Excuse me, could you tell me the way to the airport?

B：Certainly．Go down this street, and take a No．11 bus．

A：________?

B：It’s about three kilometers away from here．

A：Thanks．(Now A is in the airport, and wants to get two tickets．)

C：Can I help you, sir?

A：Yes, please．I’d like two tickets to London．

C：Ok．________?

A：On the 8th of next month．

C：The 8th, July?Let me see．Mm Sorry, we don’t have any planes to London on that day．

B：The 9th of July?That’s OK．What’s the flight number?

C：It’s CA 767．

A：CA 767．

C：Er, it leaves Beijing at 15∶30．

A：I see．

C：5200 yuan．