what we have here is a failure to communicate

Me: Hi.
Dorie: Do you have call waiting?
Me: What?
Dorie: You have call waiting, right?
Me: Yeah.
Dorie: That's so great.
Me: I guess. I hate the beep, though.
Dorie: What beep?
Me: The... beep. You know. The disruptive beep.
Dorie: I don't have it. I didn't know it beeps.
Me: You don't have it?
Dorie: No, but I need to get it. I hate never knowing who's calling.
Me: Do you mean caller ID?
Dorie: What?