[{'role': 'USR', 'utterance': 'Are you busy with your work?'}
 {'role': 'SYS', 'utterance': 'Yes. What about you?'}
 {'role': 'USR', 'utterance': "Yes, I'm very busy, too. Sometimes I work overtime."}
 {'role': 'SYS', 'utterance': 'Then your salary must be high.'}
 {'role': 'USR', 'utterance': 'Just so so. But we can travel twice every year.'}]
{'role': 'SYS', 'utterance': 'Is this time one of them?'}