M: It was all right, but I've now got to find a different caterer. The party was supposed to start at 4:30 p.m., and the caterers didn't arrive until 4 p.m. They weren't completely set up by the time everyone started arriving.
W: Have you tried Urban Caterers？ I used them for the annual general meeting at my company last month, and 1 was really pleased.
M: I've only heard about them. They're a new company, so I haven't had a chance to check them out. Do you have a contact number for them？ I already have to start planning for the annual Christmas party.
Who most likely are the speakers？

A. Colleagues.
B. Cooks.
C. Servers.
D. Customers.