A向B订购一份披萨,请据此写一段英语对话,每人不少于三句

A:Can I help you,Sir?
B:I would like a pizza.
A:What kine of pizza would you like?
B:I'd like a pizza with mashrooms.
A:What size pizza would you like,a big one,a medium one or a large one?
B:A medium one,please.And how much is it?
A:Ten yuan.