Hi, Mark! Have you finished the math yet?
Yeah, it was really difficult.
Well, I've got 2 free tickets for the Muse Concert. I wonder if you want to go this Saturday.
Oh yeah! What time does it start?
It starts at 8:00 so I'll call for you around 7:00.
Could we make it a little later? I'll go to a basketball match at 3:00 and I won't be back till just before 7:00.
OK. Well, 7:15, but no later. The traffic could be quite bad.
OK, no problem.