[{'role': 'USR', 'utterance': 'Honey, I think you should quit smoking.'}
 {'role': 'SYS', 'utterance': 'Why? You said I was hot when smoking.'}
 {'role': 'USR', 'utterance': 'But I want you to be fit.'}
 {'role': 'SYS', 'utterance': 'Smoking is killing. I know.'}
 {'role': 'USR', 'utterance': 'Check out this article. It says smoking can lead to lung cancer.'}
 {'role': 'SYS', 'utterance': "I don't believe it."}
 {'role': 'USR', 'utterance': 'But you know that smoking does harm to health, right?'}]
{'role': 'SYS', 'utterance': "Of course I know it, but you know it's hard to quit smoking. . ."}