How to say goodbye

Section 1
A: Well ,I have an appointment now.
B:I'm in quite a hurry too
A:Good to see you,goodbye.
B:Goodbye take care of youself.
Section2
A:I guess I'd better go now.
B:I've got to be going now too.
A:In that case ,I will be see you.
B:So long.see you later.
Section 3
A: It's getting late ,I have to go now.
B:We're sorry ,you have to late.
A:Please,excuse me ,won't you.
B:Certainly,Come back soon.
Section4
A: I'm glad to have met you.
B:Thank you ,It was nice to have seen you.
A:I hope we can get together again.
B:Yes,I'll be looking forward to it.
Section5
A:I think I have to leave now.
B:Must you go soon?
A:I'm afraid I realy have to.
B:Well ,It was wonderfull to get together again.