[{'role': 'USR', 'utterance': 'Lisa, hi!'}
 {'role': 'SYS', 'utterance': 'Hi, Net!'}
 {'role': 'USR', 'utterance': "Don't you usually drive to work?"}
 {'role': 'SYS', 'utterance': 'Usually, but not in bad weather.'}
 {'role': 'USR', 'utterance': 'Why is that?'}
 {'role': 'SYS', 'utterance': 'The traffic gets a lot worse when it rains or snows.'}
 {'role': 'USR', 'utterance': "I always take the train. It's a lot faster for me than driving."}]
{'role': 'SYS', 'utterance': "It's faster for me, too. But the time isn't always convenient."}