关于购物,道歉,介绍的英文对话,时长4分钟

A:Oh,there is something wrong with this oven。Where is the waiter?B:What's the matter,Sir?A:The oven is not good,it doesn't work well。B:Let me have a look at it。A:The machine is a little broken inside。Did it exist before you bought it?B:I don't know。But when I use this oven for the first time,it is not useful。A:Let me have a check first。B:Ok,here you are。A:The machine's quality is not good。I am sorry and I will give you another oven。B:I hope it will be better this time。A:Ok,I will be more careful。Here is another one。B:Thank you!Byebye!A:Byebye!