Good afternoon, may I help you, sir?
Could you do me a favor please and change this note for me?
Don't you want to buy anything in my shop?
Sorry, I just need some change. I have got to phone someone.
OK. Let me see if I can help you.
That's very kind of you.
I'm sorry, but I'm rather short of change myself. But there is a bank next to the park. You can get some there.
Well, thank you all the same.