[{'role': 'USR', 'utterance': 'We will carry out the order when the purchase order gets here.'}
 {'role': 'SYS', 'utterance': 'Good. And because this is our initial order, and your products is so new, we would like to make a deal with you.'}
 {'role': 'USR', 'utterance': "Well, actually in most cases we don't talk about special deals, but since this one is so new I will listen to what you have to say."}
 {'role': 'SYS', 'utterance': 'We want to make this a trial order. If we can sell all the products in two months, we will pay for them ; if not, we will send them back to you.'}
 {'role': 'USR', 'utterance': "I can't agree to that. My company will have to pay for both sending them and bringing them back."}]
{'role': 'SYS', 'utterance': 'We promise that if the products are sold out in two months, we will place a repeat order right away, at the same quality.'}