Look at the notes below. Some information is missing.You will hear a telephone

F: City TV advertising Department. How can I help you?
M: Hi, this is Morris Sherriff from Hawkins & Sons Electronics. We have the intention of putting a commercial on next month during the Christmas season.
F: Fine. Would you please tell us the details? Your name and telephone number?
M: OK. I’m Morris Sherriff, that’s S-H-E-double R-l-F-F. The number is 835-7823.
F: How long do you think the commercial will last?
M: One and a half minutes. And how do you charge?
F: It depends on what time your commercial is shown. If it is prime time, the price may be much higher, especially during Christmas time.
M: OK. Actually we just want to launch a new product through the commercial and the prospective buyers are mid-aged people. So it’s better to put the commercial at prime time so that it can be popularized. Actually, we’d like to be one of the sponsors of a TV play.
F: Then how long will it be shown on TV, one month?
M: Oh, no, one month will be a big burden for us, and how about as long as the TV play is shown?
F: No problem. But I think I have to let you know beforehand that a commercial followed with a TV play can ask for a high price. It’s about $ 600 per minute including the fees for making films.
M: OK. I think it’s worth the money. But you have to finish before Dec. 18th.
F: Fine, now can you send us more information about what you really want in the commercial no later than this week, so we can decide how to deal with the shooting.
M: OK. I’ll get the materials to you very soon. Do I have to pay a deposit?
F: Yes, 10% of the total cost. You can either send us a check or pay in cash.
M: I think I’ll send you a check when we meet a few days later.
F: OK, no problem. See you then.