[{'role': 'USR', 'utterance': 'What do you think of this coffee table?'}
 {'role': 'SYS', 'utterance': "It's nice, but it doesn't match the color of our room."}
 {'role': 'USR', 'utterance': 'How about this one?'}
 {'role': 'SYS', 'utterance': "Oh no, this type gets dirty very easily and it's difficult to clean."}
 {'role': 'USR', 'utterance': "Alright, let's look at some others."}]
{'role': 'SYS', 'utterance': "Look, this one matches our room and it's inexpensive."}