[{'role': 'USR', 'utterance': 'I need to stop eating such unhealthy foods.'}
 {'role': 'SYS', 'utterance': "I know what you mean. I've started eating better myself."}
 {'role': 'USR', 'utterance': 'What foods do you eat now?'}
 {'role': 'SYS', 'utterance': 'I tend to stick to fruits, vegetables, and chicken.'}
 {'role': 'USR', 'utterance': 'Those are the only things you eat?'}
 {'role': 'SYS', 'utterance': "That's basically what I eat."}
 {'role': 'USR', 'utterance': "Why aren't you eating anything else?"}]
{'role': 'SYS', 'utterance': 'Well, fruits and vegetables are very healthy.'}