选择句子，补全对话。
A: Hello, this is 6941321. Can I help you?
B: Yes.    
A: Who’s calling, please?
B: It’s Liu Dong.
A: Good afternoon, Liu Dong. My sister isn’t in right now.    
B: OK!
A:     I’ll bring a pen and a piece of paper.
(After a few seconds)
A: Please say it.
B:     But I’m afraid I can’t go.
A: What’s wrong?
B: My aunt will come this Sunday from Sydney and I’m going to the airport to meet her.
A: Oh, I see.    
B: Thank you a lot, Lu Fei. Bye!
A: Bye!

A. Lu Li asked me to go cycling with her this Sunday. B. I’m afraid that you have the wrong number. C. Can I take a message for you? D. And I’ll tell Lu Li about it. E. May I speak to Lu Li, please? F. I’ll call back later. G. Hold the line, please.