A: I have overtime next week.
B: What does that mean?
A: It means I'm working more hours than usual.
B: What are your usual hours?
A: I usually work 8 hours a day for five days.
B: How about next week?
A: I'm working another 8 hours on Saturday.
B: But Mom was planning a party on Saturday.
A: I can't make it.
B: Can't you tell your boss?
A: That's not how the real world works.
B: I wish the world was perfect.