在横线上填写适当的句子，补全对话。

A: Good morning. Can I help you?

B: I need a skirt for my daughter.

A: What color do you want?

B: Do you have white ones?

A: Yes, we do. Look!

B: It looks great!

A: It's on sale. It's only 15 dollars.

B: OK.

A: Here you are.

B: Thank you.

A: You're welcome.