Why does the woman call?

Travel agent: Good morning, Madam. Can I help you?
Customer: Ah yes. I hope so. I’ve got a bit of a problem actually. I want to go to Edinburgh for the Festival and I’m not too sure of the best way to get there. I’ve got a car but it’s not in very good condition and I think it’d take me to drive up there. Travel agent: Well if you go up the motorway I suppose about eight hours.
Customer: Eight hours!
Travel agent: Mm, it’s a long way.
Customer: Yes, it is a long way and I suppose petrol prices are a bit expensive too.
Travel agent: Well, yes. It’d probably cost you about 10 pounds and that depends on your car.
Customer: Yes, the car’s the trouble. I don’t know what kind of condition I’d arrive in. Tell me...now what about coach? Because I’ve been told that’s fairly reasonable.
Travel agent: Oh it is. It costs about 14 pounds in fact from London to Edinburgh.
Customer: Mm, that’s not too bad.
Travel agent: Very reasonable.
Customer: On the other hand it takes quite a long time.
Travel agent: Yes it takes about ten hours.
Customer: Ten hours!
Travel agent: Well yes, but you can go at night so you might get some sleep anyway.
Customer: Oh no! I never sleep sitting up. What about the train then?
Travel agent: Let me see. It takes five hours in fact from London to Edinburgh, and it costs 21 pounds single.
Customer: So much?
Travel agent: Yes, it’s a lot of money but of course you can then sleep at night and so on.
Customer: Well, can you tell me about going by plane?
Travel agent: Yes, of course..., err...the London to Edinburgh single...38 pounds, but it only takes just over an hour. It takes seventy minutes.
Customer: Really?
Travel agent: Yes. You’re there in no time.
Customer: Wonderful. That’d be a wonderful start to the holiday.
Travel agent: Mm. Shall I book you a ticket?
Customer: Well, I really ought to think about it. Thanks so much for your help but I think HI call you back if that’s OK.
Travel agent: Mm-mm.