A、He has lost his own pen. B、He wants to get into conversation with her. C、He cannot find one nearby. D、He has left his pen in R

W: Good evening, sir.
M: Good evening. My name’s Peter Roach. I believe you have a room reserved for me.
W: Just a moment, Mr. Roach. Let’s see. Roach, yes, Mr. Roach, room 803. Would you fill in this form, please?
M: Certainly. Eh…I don’t have a pen and there isn’t one on the desk.
W: Isn’t there? How strange!
M: Perhaps someone walked off with it. Could you lend me yours?
W: Of course. Here you are. How long do you intend to stay, Mr. Roach?
M. I’m not sure. It all depends. But I’m probably going to leave on Saturday. That means I probably will stay for three nights. Of course, it may be longer than that, you know.
W: For three nights until Saturday. I see. Would you tell us as soon as you know?
M: Certainly. Where shall I put the number of my passport?
W: Just at the bottom. That’s right. Thank you.
M: Oh, would you wake me up at 7 tomorrow morning?
W: At 7, certainly. Tom, would you please take Mr. Roach’s suitcase to his room? Just follow the porter, Mr. Roach.
M: Thank you. You’ve been very helpful. Goodbye.
W: My pleasure. Goodbye. Oh! Mr. Roach. My pen!
M: Your pen?
W: Yes. I lent it to you a moment ago. You remember?
M: Oh, yeah, of course you did. I put it in my pocket by mistake. Here you are. I’m very sorry.
W: That’s quite all right.