Where does this dialogue take place? At a ______.

Traveler: Hello. I’d like some information about your trips to Kathmandu.
Travel Agent: Yes, of course. What can I tell you.’?
Traveler: Well, how do we travel?
Travel Agent: It’s a specially adapted bus with room for sleeping and ...
Traveler: And, and, er, how many people in a group?
Travel Agent: Well, the bus sleeps ten. Usually there are eight travelers and two drivers, a guide to look after you.
Traveler: So, so we sleep, um, normally, in, in the bus?
Travel Agent: Yes, and it’s fully equipped for cooking and it’s got a shower system that we put up every evening, weather permitting.
Traveler: Er, um... We leave from London?
Travel Agent: Yes, and return to London.
Traveler: Is there anything special we’d have to bring?
Travel Agent: Oh, we give everyone a list of suitable clothes to bring. Of course, space is limited.
Traveler: Oh, oh yes, I understand that. Now, how long in advance would I have to book?
Travel Agent: Well, it depends. Usually six or eight months, It’s amazing the number of people who are interested.
Traveler: Well, I’m interested in the ten-week trip next spring.
Travel Agent: Um, that one leaves on the fourth of April.
Traveler: Yeah. That’s right, yeah. It’ll be for two people.
Travel Agent: That would be fine. Could you come in and we can go over all the details.
Traveler: Yes, I think that would be best, um, but can you tell me how much that’ll cost.
Travel Agent: Spring for ten weeks... Um, we haven’t got the exact figures at the moment, but, er, something like, er, 1,100 pounds per person.
Traveler: OK. Um, I’ll come and see you one day next week.
Travel Agent: Yes. Thanks for ringing.
Traveler: Thank you. Bye.
Travel Agent: Bye bye.