Where most likely are the speakers?

M1: Thank you for coming, Mr. Hamilton. I’m Richard Coleman, the maintenance manager of this museum. Here is the floor with the tiles that needs to be replaced.
M2: Well, I think I have to come here a few times to repair it completely since I’ll have to check the electric lines.
M1: Unfortunately, you will only be able to work during the evenings after the museum closes at 8 o’clock. How long do you think the work will take?
M2: I think I can probably do it in about two days. I should be finished by Wednesday.