[{'role': 'USR', 'utterance': 'Hello, Barbara, welcome back. You look great.'}
 {'role': 'SYS', 'utterance': "Rod, it's lovely to see you again."}
 {'role': 'USR', 'utterance': 'How was your trip?'}
 {'role': 'SYS', 'utterance': "Fine but tiring. Milan was interesting, it's bigger than I expected, noisier and dirtier, too."}
 {'role': 'USR', 'utterance': 'And Florence, what did you think of Florence?'}
 {'role': 'SYS', 'utterance': "Well, I didn't go there. Have you been there?"}
 {'role': 'USR', 'utterance': "No, I've never been to Italy. I'd really like to go to Roma. Well, the cars are in the car park. Is this all your luggage?"}]
{'role': 'SYS', 'utterance': 'Yes, but the suitcase is very heavy.'}