购物英语对话-Returning a Defective Item(3)

（单词翻译）

A: What can I do for you?
B: I need to return something.
A: What do you need to return?
B: I need to return this cellphone that I just bought.
A: What is wrong with it?
B: It isn't working properly.
A: What is the problem with it?
B: For some reason the phone cuts off by itself.
A: I see, and do you have your receipt¹?
B: Here you go.
A: I'll take care of this right now.
B: I appreciate your help.