How can I help you? / May I help you?
Yes. I'm looking for a sweater.
Can I try it on?
Sure, the changing rooms are over there.
How much does it cost? / How much is it?
How would you like to pay?
By credit card.
Can I pay by credit card / check / debit card?
Certainly. We accept all major cards.
Have you got something bigger / smaller / lighter / etc.?
Certainly, we've got a smaller sizes as well.