Who is paying the lunch now?

W: Thanks for lunch. It was delicious. Next time it’ s on me.
M: Don’t be silly.
W: I’ m serious.
M: All right. Next time you treat.

M: Hi, Maggie. I want all these books here.
W: That might be a lot for your dad to buy at one time.
M: My dad gets me all the books I want.
W: Well, that’ s very nice of him.