Change something in a shop

Pau: Hello. Are you OK there?
Eugeni: Yes, hi. I was given these jeans as a present but they're too small. Is it OK if I change them?
Pau: That should be OK. Have you got the receipt?
Eugeni: Yes, here you are.
Pau: OK. Well actually, we've sold out of those jeans, I'm afraid. You can choose something else if you like.
Eugeni: Oh, right. Can I try these things on?
Pau: Yes, sure. The changing rooms are over there.
...
Eugeni: What do you think of this coat? it isn't too long, is it?
Pau: No, I don't think so. it's really funky.
Eugeni: OK. I'll take it then. Thanks.