第一句：I am awfully sorry, but I am busy all afternoon today.
A: May I see you this afternoon?
B: I am awfully sorry, but I am busy all afternoon today.
A: Then how about tomorrow?
B: Just one moment. I will take a look at my appointment book.
第二句：Mr. Baker is quite busy.
A: Good morning. I'd like to see Mr. Baker, please.
B: Do you have an appointment?
A: No, I am afraid not. I've just arrived today.
B: Mr. Baker is quite busy.
I am afraid he won't be able to see you today.
He's having a meeting now.