[{'role': 'USR', 'utterance': 'OK, Mr. Wang. Thank you very much for coming to the airport to see us off. Your great country and your hospitality have left a very deep impression on all of us and your working attitude and your way of doing business have changed my opinions about Chinese people.'}
 {'role': 'SYS', 'utterance': "Really? I'm glad to hear that."}
 {'role': 'USR', 'utterance': "That's true. And this trip has been a very productive one for us."}
 {'role': 'SYS', 'utterance': 'Thank you again for your visit. We are looking forward to your reply.'}
 {'role': 'USR', 'utterance': "Believe me, Mr. Wang. I'll do my best to promote the transaction."}
 {'role': 'SYS', 'utterance': "We are happy that we have established business relations. I really hope that we'll have more business to do and more opportunities to meet each other."}
 {'role': 'USR', 'utterance': "It's very kind of you to say so."}]
{'role': 'SYS', 'utterance': 'You are very nice and helpful. Hope to see you again.'}