What can I do for you today?
It's a little embarrassing really ; you see I think I've got a counterfeit note.
Do you remember where you got it?
No, I don't. Usually I'm very careful about checking the money I'm given, but for some reason this one slipped through.
Counterfeit notes these days can be very sophisticated and difficult to spot with the naked eye. But I must warn you that if it does show to be a counterfeit I have no option but to confiscate it.
I understand. To be honest, I'll be glad to get rid of it if it is a fake.