blueskywhy

A:Oh Excuse me. Mr Lee, I almost forgot there's a telephone message here for you. A dotor Green called and asked you to call him back.
B:Where is he now? Do you know?
A:He is staying in Room 707 at the Blackwood Hotel.
B:Thank you very much. Do you have the telephone number of the hotel?
A:I'm Sorry. I don't. but you can get it. Just dial 100
B:Oh, Good. I trouble you to change the dollar.
A:All right. Here's the change. by the way, the public phones are over there on  your right.
B:I see. thank you.