Can anyone name this computer program?

I remember a guy at work put some kind of program on the computer where the computer could talk back to you per se. You could type in a question and the computer would answer back. For instance, you could type in "It's a lovely day out" and the computer would come back with something like "Yes, it sure is. What do you plan to do?" etc, etc. Then if it asked you a question and you took a long time to answer back, it would come back with, "Oooo I love it when you stare like that, you are so cute."
It was a really fun program. I left that job and don't remember what the guy said he did to make the computer do that. Does anyone know what I'm talking about? Tweet