W: You look tired.

M: Yeah, I've been working so much overtime lately.

W: Really? How come?

M: My boss gave me a big project. I had to have it finished by this morning. It was so difficult.

W: You shouldn't work so hard.

M: I know, but hard work pays off. You know.

W: What do you mean?

M: Maybe now I'll get that promotion I was hoping for.