What are they mainly talking about?

A: I want to find a part-time job during the summer vacation and earn some money. How about you?
B: I’m going to take a few summer courses so that I can graduate early next year.

A: Do you think you can play the music tape another time, dear? I’ve got a slight headache.
B:Of course. Sorry. I didn’t realize you could hear it. You want me to call the doctor?
A: No, thanks. I’ll be OK in a minute.