[{'role': 'USR', 'utterance': 'Front Desk, may I help you?'}
 {'role': 'SYS', 'utterance': "Yes, I'd like to move to another room."}
 {'role': 'USR', 'utterance': 'Is there anything uncomfortable in your room?'}
 {'role': 'SYS', 'utterance': "Yes. The air-conditioner in this room doesn't work."}
 {'role': 'USR', 'utterance': 'May I have your room number, sir?'}
 {'role': 'SYS', 'utterance': 'Wang Wei. Room 1212.'}
 {'role': 'USR', 'utterance': 'OK. Mr. Wang, may I send a room attendant to check it for you first?'}]
{'role': 'SYS', 'utterance': 'All right.'}