[speaker001:] Can I help you, sir?
[speaker002:] Yes, I'd like a book about law.
[speaker001:] Would you tell me the name of the book and the author?
[speaker002:] Uh, the Origin of Law. And it's written by Professor Felix of Harvard.
[speaker001:] I'm sorry. It's out of stock now. Could you come by again next week?
[speaker002:] Next week? It is too late. I need it urgently.
[speaker001:] Well, then, is it convenient to leave your phone number so that I can inform you as soon as we restock it?
[speaker002:] No, thanks any way.
[speaker001:] You're welcome.