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Dialogue Two   Saying Good bye
  A: I think I've come to say goodbye. 
B: Must you? It is still early.
A: Really I must be going. The train leaves at five twenty.
B: Well, in that case. I won't keep you. Remember to drop me a line.
A: Oh, I certainly won't forget that. Thanks for everything.
B: Not at all. 
A: Bye for now, and all the best. 
B: Good bye and good luck!