[{'role': 'USR', 'utterance': 'Ahh. . . What a fine day! I do feel like an outdoor exercise.'}
 {'role': 'SYS', 'utterance': 'How about taking a walk in the park?'}
 {'role': 'USR', 'utterance': "OK. It's delightful to have a walk in the park with the air so fresh."}
 {'role': 'SYS', 'utterance': "Oh, it's so quiet here. We have the park to ourselves, only you and me!"}
 {'role': 'USR', 'utterance': "Don't you see many people over there? Just on your left."}]
{'role': 'SYS', 'utterance': 'Oh, I see them. Some are doing Taijiquan, some are performing swordplay, some are practising the Chinese Wushu.'}