A: Where can I get a tour of the city?
B: We can arrange a tour for you right here at our concierge desk.
A: How much is the tour?
B: It depends on what kind of tour you want.
A: I hear you have a half-day bus tour.
B: We do, and it is $25 per person.
A: Can I get off the bus and explore on my own?
B: You can only do that if you take the all-day bus tour.
A: Is that more money?
B: It doubles the price.
A: That's highway robbery, but book me anyway.
B: That will be $50 then.