[{'role': 'USR', 'utterance': 'Nice to see you again, Mike. How was your trip to China?'}]
{'role': 'SYS', 'utterance': "It was great. I flew to Beijing with my wife last month and I stayed there for 3 days. There were so many things to see and so many places of interest to visit in Beijing that we really couldn't decide whether to leave or stay."}