What are the speakers mainly discussing?

(Woman)  Have you made arrangements to attend the sales conference in London?
(Man) Sort of. I’ve registered to attend the conference, but I haven’t booked a room yet.
(Woman) You should really do that soon. I made my reservations last week, and the conference hotels are already full. I’m staying several miles from the convention center.
(Man) Well, if I can’t get a hotel room, I’ll just stay with my brother-in-law. He has an apartment downtown.