单项选择题

Conversation 2
[听力原文] 9-10
M: Good morning. (10) Will you book a plane ticket to London for me
W: (10) Yes, sir. What time would you like to leave
M: (9) Next Tuesday, if possible.
W: (9) That’ll be the 21st of December.
M: Yes, that’s right.
W: There are several flights available.
M: Would you check what flights are available on the 21st of December.’
W: (10) All right. Let me check it over.
M: Morning flights will be prefect.
W: Yes, sir. There is a flight available that day, at 10:00 a.m.
M: Fine. I’ll take that flight, then.
W: 10:00 a.m. (10) I’ll fix your ticket.
M: When do I check in
W: You must be there by 9:00 a.m.
M: Thank you.

What’s the relationship between the two speakers（）

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