This idea is both innovative and excellent! Not only should it help designers understand what kinds of things they would expect the bot to say, but I think, more importantly, it helps us gauge how we would feel and respond when chat bots speak to us.

There is a lot of current discussion about how smart we can make the bots appear, and even if we can build them to detect emotion. However, I think what is more important is to make bots that make us feel smart and evoke positive emotions within us when they converse with us.