Ending Conversations
There are several ways that you can end a long phone call without making up a story or sounding rude:
Leave the conversation open.
Promise to finish your discussion at another time.
End on an "up" note.
Tell the person how much you've enjoyed speaking with him/her.
Before hanging up, be sure that you have answered all the caller's questions
Always end with a pleasantry such as : "Have a nice day" or "It was nice speaking with you"
As long as you are honest and polite with the other person, you shouldn't have any problems getting off the phone and onto something else.