What was the man doing last night?

M: I thought you were going to call me last night. I was waiting the whole night.
W: I had intended to. But it was 12 o’clock when I got back home after meeting my friends. I didn’t want to disturb you.

W: Excuse me, can you tell me where is the Staffs Association meeting held?
M: It was planned to hold in Room 110, but has changed to the auditorium for more space.