Need To Know Basis

Ever had one of these conversations?

Me: So X has a girlfriend?

Him: That's what he said.

Me: What's her name?

Him: I don't know.

Me: He's your best friend!

Him: Yeah, we didn't really talk about it.

Or

Him: X and his wife had their baby.

Me: What did they have?

Him: I think it was a girl (or boy).

Me: What is her (his) name?

Him: I didn't ask.

Me: How much did she (he) weigh?

Him: I don't know.

Today's conversation:

Him: That couple we saw walking their dog called. We're going to keep their bichon for a week while they are out of town.

Me: What are their names?

Him: I don't know. They're bringing the dog by tomorrow for us to meet it.

Alright.