[{'role': 'USR', 'utterance': 'May I take your order now, sir?'}
 {'role': 'SYS', 'utterance': "Yes, please. I'd like to start with a chef's salad."}
 {'role': 'USR', 'utterance': "Chef's salad for starter. And what would you like to have for the main course?"}
 {'role': 'SYS', 'utterance': "I'll have steak."}
 {'role': 'USR', 'utterance': 'How would you like your steak done?'}
 {'role': 'SYS', 'utterance': 'Medium.'}
 {'role': 'USR', 'utterance': 'And what would you like to go with your steak?'}]
{'role': 'SYS', 'utterance': 'Peas and carrots.'}