[{'role': 'USR', 'utterance': 'Bill, will you be free at noon?'}
 {'role': 'SYS', 'utterance': 'Yes. What can I do for you?'}
 {'role': 'USR', 'utterance': 'We need a new filing cabinet in the office. Could you go downtown with me after lunch?'}
 {'role': 'SYS', 'utterance': 'All right. Have you got an idea about what type to buy?'}
 {'role': 'USR', 'utterance': 'Yes, the same as the one we have. And we also need some small articles in the office, such as pens, clips, erasers and sticky notes.'}]
{'role': 'SYS', 'utterance': 'Can you remember them all?'}