Read the following dialog:Customer: Excuse me, I'd like to return this shirt. I bought it last week, but it's too small.Shop assistant: Do you have the receipt?Customer: Yes, here it is. I paid 45 pounds for it.Shop assistant: I'm sorry, but we can't give you a refund after seven days. However, I can offer you a store credit or exchange it for a larger size.Customer: I'd prefer to exchange it, please. Do you have this shirt in a large?Shop assistant: Let me check. Yes, we have it in large in blue and black. Unfortunately, the red one is sold out.
