This is not the world's first conversation game; there are many others. The best one I know of is a text game called Galatea, by Emily Short. The entirety of the game is a conversation with an animate statue. It's very complex and pretty interesting and fun to play, and there are many endings. <a href="http://www.wurb.com/if/game/1326" rel="nofollow">http://www.wurb.com/if/game/1326</a>
They need to show some actual Game Footage... I can't imagine that this is going to be any good. I HOPE I AM WRONG, but if when I ask my cell phone to "Call Mom" and it replies with "you said CALL HOME, is this right?" You know the world isn't there yet...