[{'role': 'USR', 'utterance': 'How are you doing?'}
 {'role': 'SYS', 'utterance': "I'm pretty good, you?"}
 {'role': 'USR', 'utterance': "I'm awesome."}
 {'role': 'SYS', 'utterance': 'How long have you been on the bus?'}
 {'role': 'USR', 'utterance': "I've been on here for like, 15 minutes."}
 {'role': 'SYS', 'utterance': 'Do you catch this bus a lot?'}
 {'role': 'USR', 'utterance': 'Not much, I have a car.'}]
{'role': 'SYS', 'utterance': 'So, you have your own car?'}