英语对话`~~~~

a; can i help you?
b:Excuse me, but I want to buy a hat.
a: what color do you like?
b:a White one please.
a:White hat... Sorry, we don't have a white one. How about a black hat?
b:That's ok. How much is it?
a:25 yuan.
b:Ok, I will have it. Here's the money.
a: Here's your hat. Thank you for coming.

A：Can I help you?
B:Excuse me! I want a cap.
A:Would you like this blue one?
B:Oh!That is nice! But I want a white cap.
A:Let me see. Oh, that is white. Do you like it?
B:Great! That is very beautiful!I would like it!
Haw much is it?
A:Twenty yuan,please.
B:For you. Thank you!
A:Not at all!