[{'role': 'USR', 'utterance': "You're so witty. . ."}
 {'role': 'SYS', 'utterance': 'So why is the face tilted to the right?'}
 {'role': 'USR', 'utterance': 'This watch is supposed to be worn on your left hand.'}
 {'role': 'SYS', 'utterance': "So it's not as convenient for left-handed people?"}
 {'role': 'USR', 'utterance': "It's better for right-handed people like me. See, I don't even have to move my arm to see the time."}]
{'role': 'SYS', 'utterance': "I'm left-handed. You bought that watch so that I won't borrow it. . ."}