[Q]: M: I want to order a laptop computer for my wife. W: Certainly. What type would you like to buy for her? M: AM520. W: What color does she want, a black one or a white one? M: She prefers a black one. W: All right. Have you decided what size to buy? There are different sizes to choose from, from 13-inch ones to 17-inch ones. M: Well, I want to buy a 15-inch one. How much does it cost? W: 5000 yuan, including the postage. What was said before this conversation?
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[A]: W: Hello, this is Dell China. What can I do for you?
input: Please answer the following: M: Oh,dear,my back's killing me. What was said before this conversation?
++++++++++
output: W: How are you,Brandon?
Please answer this: Ryan: Hi, Sarah. My name is Ryan, nd I'm 27 years old, and I work as a doctor at City Hospital. I enjoy reading books on history, hiking with my dog, Amelia, and eating Japanese food. I also like a woman who loves adventure, is open to new ideas, and likes discussing world politics and government. Game Show Host: Okay. Well, thank you, Ryan. Let's go on to Contestant Number 2. Nate: Hi. I'm Nate. I'm 24 years old, and I am a guitar player in a rock band. I love traveling to new countries, watching action movies, and playing video games with my friends. And I love women who like my music, don't mind loud rock music, and a person who loves a good cheeseburger over the grill. I think I'm the man for you. Game Show Host: Well, thank you Nate. That's Contestant Number 2. Let's go on to Contestant Number 3. Charles: Hello. My name is Charles. I'm 29 years old, and I teach English at the University of Utah. In my free time, I enjoy mountain biking, gardening, and raising chickens in my back yard. I also help feed the homeless once a week. I also speak three languages, and I prefer women who have a good sense of humor, and cook all kinds of food, and who find joy in serving others. Game Show Host: Well, there we have it. Three contestants. And we will have Sarah ask these contestants questions after right after this commercial break. What was said before this conversation?
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Answer: Game Show Host: Hello, everyone and welcome to the Dating Game, where men and women meet the people of their dreams. Now, let's have our contestants introduce themselves, and then Sarah can ask some questions. Here we go. Contestant number one.
Problem: W: Why are you so tired? What did you do today? M: There were so many things to do. W: Did you do all those things all yourself? M: Oh, yes. I had to. I had to check the new products. I had to hold the meeting with the department managers. I had to listen to their reports and give my comments. That's my job, you know. W: Well, it sounds like you really had to do all those things. But you shouldn't work too hard. Do you know what you should do at the moment? M: What? W: Take some time off. M: Go on holiday? W: To relax yourself. How about having a trip this weekend? M: And to have a picnic? W: Yes. M: Great! What was said before this conversation?

A: M: Oh, I'm exhausted.
Problem: Given the question: W: Oh, dad. I lost my keys. What was said before this conversation?
++++++++++++++++++++++++++++++++
The answer is:
M: You look unhappy, Mary. What happened?
Problem: M: OK, Ma'am. I'll have to weigh it first. All right, it's not over- weight. That's 5.5 yuan for overseas mail. W: That's not expensive. How long does it take for a letter to get to the U. S.? M: It all depends. It usually takes four or five days. W: That's wonderful. It used to take more than a week when I was staying here six years ago. Well, I want to register it. M: All right. It's probably take a little longer to get there though. W: Yes, I know. Well, please let me have a post office box. M: That's OK. Fill out this form, please. W: How much is the rent per month? M: It's 100 yuan per year. W: Here is the form and money. M: OK. Here is the key for you. The number is on it. Any more requests? W: No, Thank you. What was said before this conversation?

A:
W: I want to mail this letter overseas.