What prompted the conversation?

W: May I help you, Sir?
M: Yes. I want to sell my furniture and I’d like to put an ad in the news paper, please.
W: OK. What’s your name, please?
M: Bill Martyn.
W: M-A-R-T-I-N?                                                
M: Y-N.
W: Okay. M,A-R-T-Y-N. And your address, Mr. Martyn?
M: For the next few weeks I’ll be at the Garden Apartments on Book Boulevard.
W: Is that where you want to be billed?
M: No. I’ll probably be gone before 0 bill could be sent. I’m just going to pay by cash.
W: Okay. The rates are by the inch, not by the word. So, if you want to use abbreviations, that might save you some money.
M: Oh, that’s a good idea. I have everything written out here, but I’ll just check it over before I give it to you.  Maybe I can use some shorter words, too.
W: Okay. You can use that table over there to make your revisions. Just bring it back to me when you are ready.