[{'role': 'USR', 'utterance': 'Hi, Martin. How are you?'}
 {'role': 'SYS', 'utterance': "Fine, but busy. We've got some exams next week, remember?"}
 {'role': 'USR', 'utterance': 'I know. How much work did you do last night?'}
 {'role': 'SYS', 'utterance': 'None. I went to the cinema. What about you?'}
 {'role': 'USR', 'utterance': "I had no time last night. It was my sister's birthday, so we all went out to dinner."}
 {'role': 'SYS', 'utterance': 'Have you done any work this morning?'}
 {'role': 'USR', 'utterance': 'Some, but not a lot. Anyway, I rang to ask you something. Do you know where my physics book is?'}]
{'role': 'SYS', 'utterance': "I've got no idea, but you can borrow mine if you want."}