Saying Thank You

A: I'd better be going.

B: So soon ? Why don't you stay a little longer ?

A: I wish I could, but it's already late.

B: Oh, it's a shame that you have to leave .

A: Thank you for a wonderful meal.

B: I'm glad you enjoyed it .

A: I really must be going now.

B: But you just got here. Can't you stay a little longer?

A: That's very nice of you, but I really can't.

B: Well, it's too bad that you have to go.