请求大家帮我编一个对话，我英语不好，不知从何下手。谢谢大家！！！

Question

场景：一位顾客B买了一个月的手机坏掉了，他告诉售货员A手机的问题，售货员了解后，帮他换了手机
对话：
A：问B手机出现什么问题
B：告诉A手机突然就坏掉了
A：检查后发现手机确实有一些问题
B：告诉B手机还在保修期（under guarantee）
A：做了道歉并问B要退款还是要换手机（whether B would like to refund or to have his/her mobile phone replaced ）
B:宁愿换一部
A：马上换了新的一部给他
朵唯S920(朵唯S920)
类别：手机　　品牌：朵唯参考价格： ￥1330[北京] 市场价 商家报价：￥1284 至 ￥1690 相关：媒体价价格是￥1690;
网络模式：GSM 外观设计：翻盖 主屏尺寸：3.0英寸 240×400像素 摄像头像：300万像素 CMOS机身内存：1GB ROM+512MB RAM 蓝牙传输：支持蓝牙2.0
http://detail.zol.com.cn/cell_phone/index258135.shtml

Answer 1

A: Hi, Can I help you?
B: Yes, please. I bought a mobile phone here one month ago, but now it is broken down.
A: I am sorry to hear that. Would you please tell me what's wrong with it?
B: I didn't do anything and it just couldn't work all in a sudden.
A: Don't worry. I will check it for you. Hmm. It really has some problems. I will ask our technician to repair it for you.
B:Oh, it is under one year's guarantee.
A: In that case, do you prefer to refund or have your mobile phone replaced? Sorry for the inconvenience caused.
B: I'd rather have a replacement of a new one.
A:No problem. Here it is.
B: Thank you very much.
A: You are welcome.

Answer 2

A：what's wrong with your mobile phone?
B：I don't know, it didn't work suddenly.
A：I've checked the phone, there is something wrong with it.
B：The phone is still under guarantee.
A：I am very sorry about that. I can provide you with a refund or have your mobile phone replaced, which would you like to do?
B:I'd rather replace the mobile phone.
A：here is a new mobile phone for you.

Answer 3

A:what is the matter with the cellphone?
B:It was broken
A：Wait for a moment,let me check it ,
B:How is it?
A:very sorry,there is problem with it,How do you want to deal with it,refund or change a new one?
B:new one,please
A:OK