Why is Mr Griffin going to the city where the hotel is located?

Barbara: Sunrise Hotel. Good Morning. Barbara speaking.
John: Hello. My name’s John Griffin. I’d like to mark a booking for tonight, please. Are there any rooms still available?
Barbara: Yet, there’re a few left. What kind of room do you want?
John: Well, I’m on a business trip so I only need a single room.
Barbara: I don’t think that’ll be a problem. Let’s look. Yes. . . There’s one single room left, shall I book it for you?
John: Yes, please. That would be great.
Barbara: Right, then. Let me get a pen. So, what’s your name again, please?
John: John Griffin. That’s J-O-H-NG-R-I-F-F-I-N.
Barbara: OK. I’ve got that down. Wait a minute. You’ve been here before, haven’t you?
John: Yet, that’s right. I’ve stayed in your hotel twice before.
Barbara: Well, we should have your details already. Let’s look at the cards. Here we are. So, John Griffin . . . from Sydney, right?
John: Yes, that’s right.
Barbara: So, tell me if I’m wrong. John Griffin, passport number 87637489. Age 30.
John: Yes, that’s right.
Barbara: So, it’s a single room for two nights. Is your credit card number the same to confirm the booking?
John: Yes, it’s the same, but I’ll want you to forward the bill to my company again, if that’s OK?
Barbara: Oh yes, Mr Griffin. That’s no problem at all. Your company has always settled very promptly in the past. And, what time can we expect you tonight, Mr Griffin?
John: Well, the plane lands at 9: 15 pm, so by the time I get through the formalities . . . that should take about 20 minutes ... I should be at the hotel by about 10: 00. Will the restaurant be open then as I’ll be hungry—I hate the food on planes!
Barbara: I’m afraid it’ll be closed by then, Mr Griffin. Can I arrange to have a snack left in your room? A burger? Fries? A sandwich?
John: Yes, that would be great. How about a cheese sandwich with fries?
Barbara: No problem, sir. I’ll see to that. Oh, the fries might be cold by the time you arrive.
John: Ah yes, Just the sandwich then.
Barbara: No problem. Anything else, Mr Griffin?
John: No, that’s all. Thank you. See you tonight.
Barbara: See you tonight, Mr Griffin. Goodbye.
John: Goodbye.