[{'role': 'USR', 'utterance': 'Hello.'}
 {'role': 'SYS', 'utterance': 'Hello. Is there anything I can do for you?'}
 {'role': 'USR', 'utterance': "Yes, please. I'd like to open a savings account. Would you please give me some advice?"}
 {'role': 'SYS', 'utterance': "Certainly, I'll be very happy to help you. Usually we offer current or fixed accounts for individuals."}
 {'role': 'USR', 'utterance': "What's the difference between the two?"}
 {'role': 'SYS', 'utterance': 'If you open a fixed account, the interest rate is higher.'}
 {'role': 'USR', 'utterance': 'Then how about the current account?'}
 {'role': 'SYS', 'utterance': 'You may withdraw the money at any time. You just need to present your deposit book.'}
 {'role': 'USR', 'utterance': "Thank you for your help. I think I'll open a current account."}
 {'role': 'SYS', 'utterance': 'OK. Do you have your ID card on you?'}
 {'role': 'USR', 'utterance': 'Yes.'}
 {'role': 'SYS', 'utterance': 'Good. Everything is done. Here is your deposit book and ID card.'}
 {'role': 'USR', 'utterance': 'Thank you very much.'}]
{'role': 'SYS', 'utterance': "It's my pleasure."}