If you really want to talk about a specific topic, you can tell people that you "have something you want to talk about".

Guys, I have something I want to talk about. I've been thinking about our hiring process, and there are some things that I think we need to improve.

When someone uses this phrase, it makes the topic seem important. If you don't have a specific, important topic to discuss,then you don't "have something to talk about":

A: Did you have anything that you wanted to talk about?

B: No, not really. I just wanted to chat and see how you're doing, that's all.