B: OK with me.

A: Is Friday OK?

B: Yeah, that sounds good.

A: Is 7:30 OK?

B: Sure. That's fine with me.

A: A problem has come up and I can't come to see you.

B: I'm sorry to hear that.

A: When will it be convenient for you?

B: Let me consult my calendar.

A: Are you busy now?

B:  No.

A:  I've got a couple of questions to ask you.

A: Does that date suit you?

B: No, it doesn't suit me at all.

A: What can I do for you?

B:  I'd like to change a reservation for flight 732 on April 7th. If possible I 'd like to fly on the 10th on the same flight.