[{'role': 'USR', 'utterance': 'Hello, who is speaking, please?'}
 {'role': 'SYS', 'utterance': 'Hello, Mr. Stern. This is Hao Bo from the International Travel Agency. I have made the plane reservations for you.'}
 {'role': 'USR', 'utterance': 'Oh, good. Let me get a pencil and take down the information. Well, go ahead, please.'}
 {'role': 'SYS', 'utterance': "Okay. You'll be travelling on Northwest Airlines, flight number 222."}
 {'role': 'USR', 'utterance': 'What time does it leave?'}
 {'role': 'SYS', 'utterance': 'It departs Guangzhou at 10:30 on the morning of July 10.'}
 {'role': 'USR', 'utterance': 'That is good.'}
 {'role': 'SYS', 'utterance': 'You want to fly first class. Is that correct, Mr. Stern?'}
 {'role': 'USR', 'utterance': "That's right."}
 {'role': 'SYS', 'utterance': 'Well, I have got you three first class tickets and I have reserved your seats. Your seat numbers are 8A, 8B and 8C.'}
 {'role': 'USR', 'utterance': "Those are in the non-smoking section, aren't they?"}
 {'role': 'SYS', 'utterance': 'Yes, they are. I have charged the tickets to your credit card. They are 630 dollars each, so It is 1890 dollars for all three.'}
 {'role': 'USR', 'utterance': 'Fine, thank you very much.'}]
{'role': 'SYS', 'utterance': "One more thing. Could you give me the names of the people you'll be travelling with?"}