What are the speakers talking about?

Man: It sure is hot today. You could fry an egg on the sidewalk. I can’t remember the last time it was this hot in April.
Woman: I know. It’s usually cooler this time of year.
Man: Well, I can’t complain. Since I sell ice cream, this heat’s good for business. I’ve been doing really well all week.
Woman: That’s good for you. And I get to stay cool by working in an air-conditioned office all day, so that’s something.