[{'role': 'USR', 'utterance': 'I would like high speed internet installed in my house.'}
 {'role': 'SYS', 'utterance': 'You have to make an appointment before we can come out and install it.'}
 {'role': 'USR', 'utterance': "I'd like to make an appointment right now."}
 {'role': 'SYS', 'utterance': 'What day are you available?'}
 {'role': 'USR', 'utterance': 'I would like to have it done this Friday.'}
 {'role': 'SYS', 'utterance': "Three o'clock is the only time we can come in."}
 {'role': 'USR', 'utterance': 'Is it possible for someone to come a little earlier?'}]
{'role': 'SYS', 'utterance': "I'm sorry, but that's our only available time."}