What time will the man call again? What will Mary do later?

M: Hello, can you put me through to Jack, your Marketing Manager?
F: OK, hold on, please ... I am sorry. Jack’s on the phone right now.
M: Then, I will call him later this afternoon.
F: Can you tell me what time you will call him?
M: At about half past four.
F: Now it is half past three. That is one hour later.

M: Hi, Mary, how are you doing?
F: Fine, fine, thank you. Are there any messages for me today?
M: Yes, yes. Mr. Baker called from Scotland about the new order. He said you met him at the trade fair. I’ve got his phone number here and would you like to return his call?
F: Thank you. I certainly will.