[{'role': 'USR', 'utterance': "You're going to wear out the computer's keyboard!"}
 {'role': 'SYS', 'utterance': 'Oh, hi.'}
 {'role': 'USR', 'utterance': 'Do you have any idea what time it is?'}
 {'role': 'SYS', 'utterance': 'About ten or ten-thirty?'}
 {'role': 'USR', 'utterance': "It's nearly midnight."}
 {'role': 'SYS', 'utterance': "Really? I didn't know it was so late."}
 {'role': 'USR', 'utterance': "Don't you have an early class to teach tomorrow morning?"}
 {'role': 'SYS', 'utterance': "Yes, at seven o'clock. My commuter class, the students who go to work right after their lesson."}
 {'role': 'USR', 'utterance': 'Then you ought to go to bed. What are you writing, anyway?'}
 {'role': 'SYS', 'utterance': 'An article I hope I can sell.'}
 {'role': 'USR', 'utterance': "Oh, another of your newspaper pieces? What's this one about?"}
 {'role': 'SYS', 'utterance': 'Do you remember the trip I took last month?'}
 {'role': 'USR', 'utterance': 'The one up to the Amazon?'}]
{'role': 'SYS', 'utterance': "Well, that's what I'm writing about-the new highway and the changes it's making in the Amazon valley."}