Is there a game out there that if you type something to an NPC they'll react to what you typed?

I saw a game on G4 (Cinematec for you veterens out there.) that you typed something to these two people and if you type the wrong thing like if you start cursing or something they'll like push you out the door or if your polite they'll be nice to you and you can actually have a conversation with the NPC's. Help?