[{'role': 'USR', 'utterance': 'Do you want to hear a funny joke?'}
 {'role': 'SYS', 'utterance': "OK. Are you sure it's funny, though?"}
 {'role': 'USR', 'utterance': "Well, you'll see."}
 {'role': 'SYS', 'utterance': 'OK.'}
 {'role': 'USR', 'utterance': 'OK, an Englishman, a Scotsman, and an Irishman were going on a trip across the desert, and they could only take one thing with them.'}
 {'role': 'SYS', 'utterance': 'I see.'}
 {'role': 'USR', 'utterance': 'So they met up at the start of the journey and showed each other their equipment.'}
 {'role': 'SYS', 'utterance': "Oh, that's funny!"}
 {'role': 'USR', 'utterance': "Hang on, I haven't finished yet."}
 {'role': 'SYS', 'utterance': 'Oh, sorry.'}
 {'role': 'USR', 'utterance': "Well, as I was saying, they showed each other what they had decided to bring. The Englishman had brought some water. 'If we get thirsty, we'll have something to drink, ' he said. The Scotsman brought a map. 'If we get lost, we'll be able to find our way. ' The Irishman had brought a car door."}
 {'role': 'SYS', 'utterance': 'A car door? You mean just one car door?'}
 {'role': 'USR', 'utterance': "Yep. A car door. 'Why the door? ' the others asked him. 'Well, ' he said, 'If it gets hot, we can open the window. ' Do you get it?"}]
{'role': 'SYS', 'utterance': 'Well...'}