chat_history: ["It's really hard to stay disciplined and watch what you eat.", "I agree, it's something I struggle with as well. Have you tried an diets you liked?", "I haven't done anything specific with diets, no.  Have you found one that you like?"]
sys_response: I've tried a few, and I would have to say the one that I liked the most was Weight Watchers. It's pretty easy to stay on, and the food is usually good. The only big problem is that it gets expensive.
situation: I've been trying to lose some weight and watch my diet.  However, I can't refuse birthday cake, and ate too much at my Dad's party!