[{'role': 'USR', 'utterance': 'I have to do some shopping.'}
 {'role': 'SYS', 'utterance': 'What are you going to look for?'}
 {'role': 'USR', 'utterance': "I'm trying to buy a new bedroom set."}
 {'role': 'SYS', 'utterance': 'What store are you going to?'}
 {'role': 'USR', 'utterance': "I'm not sure."}
 {'role': 'SYS', 'utterance': "You don't know?"}
 {'role': 'USR', 'utterance': 'I have no idea where to find one.'}]
{'role': 'SYS', 'utterance': 'Would you like me to tell you where I got mine.'}