#Person1#: Can I help you, sir?
#Person2#: Yes, I'd like a book about law.
#Person1#: Would you tell me the name of the book and the author?
#Person2#: Uh, the Origin of Law. And it's written by Professor Felix of Harvard.
#Person1#: I'm sorry. It's out of stock now. Could you come by again next week?
#Person2#: Next week? It is too late. I need it urgently.
#Person1#: Well, then, is it convenient to leave your phone number so that I can inform you as soon as we restock it?
#Person2#: No, thanks any way.
#Person1#: You're welcome.
The book #Person2# urgently needs is out of stock. #Person1# will inform #Person2# as soon as it is restocked.
buy a book