关于Go shopping 的英语对话（不少于16句）,谢谢！

Can i help you?
yes, please.
what would you like to look at?
a coat, please.
how about this one?
oh, i don't like yellow.
what color do you like?
my favorite color is green.
is this one OK?
yes, it's all right.
but it's too large for me
what size do you want?
i am short, so i need Size S.
ok, please have a look at this one.
can i try it on?
sure.
thank you
ok, it suits me fine. i will take it. How much is it?
300 yuan, please.
it is too expensive. Can it be cheaper?
how about 200 yuan?
ok, that's nice. Here is the money.
thank you.
you're welcome.