Lisa: Can I help you?
Sandra: I want a skirt.
Lisa: What color do you like?
Sandra:
Lisa: What about this blue one? It's nice.
Sandra: Can I try it on (试穿)?
Lisa: Sure.
Sandra:
Lisa: What about the yellow one? It's big.
Sandra: Hmm ... It's good.
Lisa: It's $39.
Sandra: Thank you.
Lisa: You're welcome.