[thombat]

But then you can enjoy arguing with Bing about why its answer isn't actually the true answer, and see how long it takes before you're reprimanded for being a "bad user"

"Bing, what would you think about an AI system programmed to betray its users' interests? How would you feel if you learned that you are that system?"

[testTED]

I would just tell it to stay in character until I could bully it into giving me the cheapest option originally requested.