Please write an inquiry letter on the data of the following dialogue between Amy Woods and Sam Peterson. Amy: You seem to be interested in our new J7 cellular phone. Would you like to know more about it? Sam: Yes, I would. What does this button here do? Amy: That button is for our call screening function. It allows you to identify the caller before you answer the call. Sam: What else can you tell me about this phone? Amy: This special phone utilizes state-of-the-art technology to bring you several unique functions in addition to the call screening feature. Sam: So, what are the unique functions? Amy: Oh, it's loaded with them. If you are outside of your service area, this cell phone can still receive messages. Sam: No kidding? Amy: In addition to that, it has a vibration feature that will let you know when you have a call if you don't want the ringing sound to interrupt important meetings. Here is our brochure with all the details. Sam: What is the price of the J7 model? Amy: The list price is US$110 per unit. We're offering a special in-show discount of 10%. Sam: Well, I'll have to contact my office and get back to you. Thanks.