[{'role': 'USR', 'utterance': 'I wonder if you could help me find something for my daughter.'}
 {'role': 'SYS', 'utterance': "Do you think she'd like a laptop?"}
 {'role': 'USR', 'utterance': 'I think that would be perfect.'}
 {'role': 'SYS', 'utterance': 'A Mac is something most people appreciate.'}
 {'role': 'USR', 'utterance': 'In fact, she prefers Macs. How much is one?'}
 {'role': 'SYS', 'utterance': 'Our 15 - inch Pro will cost you only $ 2, 100.'}
 {'role': 'USR', 'utterance': "She's going to be so happy. Let me have one."}
 {'role': 'SYS', 'utterance': "You've made a good decision. How would you like to pay?"}
 {'role': 'USR', 'utterance': "I'll pay for it with my VISA."}
 {'role': 'SYS', 'utterance': "It's all yours after you sign here, please."}
 {'role': 'USR', 'utterance': 'Are there any extras that she needs?'}
 {'role': 'SYS', 'utterance': 'This is good to go. If she wants accessories, just visit us again.'}
 {'role': 'USR', 'utterance': "You've been so helpful. Thank you."}]
{'role': 'SYS', 'utterance': 'Have a nice day, and thank you for shopping here.'}