Provide the theme summaries for the following conversation: 

#Person1#: Well, Miss Li, it's time for us to say good-bye to each other.
#Person2#: Yes, I suppose we must. I have enjoyed all these days that you have spent with me, and I'll always remember them. I've learned a lot from you. Thank you for all your kindness.
#Person1#: I'm glad you could come to see us off. I have enjoyed your interpreting. You have done a wonderful job. I hope you be my interpreter again next time I'm here.
#Person2#: I hope so, too.
#Person1#: It's hard to tear myself away from your friendly people and your ancient country, but nothing lasts for ever. I have to go back home this time, but I'm sure I'll return very soon.
#Person2#: I'm really glad to hear that
#Person1#: Good-bye. Miss Li, say hello to your husband and your son for me. See you soon.
#Person2#: Good-bye, Mr. White. A happy journey home, and hope to see you again soon.

Summary: 
Mr. White and Miss Li say goodbye to each other. Mr. White hopes Miss Li will be his interpreter again and thanks her for seeing them off.