chat_history: ['I suppose to be on a committed diet but I kind of cheated today.', "Well, I can understand that. It's very hard to be on a very strict diet, without a break here and now!", "It is my coworkers said they was going to Burger King and I couldn't resist I feel so bad and guilty."]
sys_response: Well, i am sure you are disappointed, but all you can do now is just get back on the diet again and try to be more dedicated. It's hard, I know!
situation: I'm on a diet but I ate burger king for lunch I feel so  ashamed I cheated.