[{'role': 'USR', 'utterance': "I'm not sure, is this our stop?"}
 {'role': 'SYS', 'utterance': 'Yeah, get off the bus.'}
 {'role': 'USR', 'utterance': 'Do you have any idea where we are?'}
 {'role': 'SYS', 'utterance': "I'm really not sure."}
 {'role': 'USR', 'utterance': "This can't be the right stop."}
 {'role': 'SYS', 'utterance': "I don't think this is right."}
 {'role': 'USR', 'utterance': "We got off too early, didn't we?"}]
{'role': 'SYS', 'utterance': 'Yeah, we did get off too early.'}