Leslie: How are you this afternoon?
Paul: Just fine. I looked over the catalog you gave me this morning, and I'd like to discuss prices on your computer speakers.
Leslie: Very good. Here is our price list.
Paul: Let me see… I see that your listed price for the K-two-one model is ten U.S. dollars. Do you offer quantity discounts?
Leslie: We sure do. We give a five percent discount for orders of a hundred or more.
Paul: What kind of discount could you give me if I were to place an order for six hundred units?
Leslie: On an order of six hundred, we can give you a discount of ten percent.
Paul: What about lead time（从订货到交货的间隔时间，交货期）?
Leslie: We could ship your order within ten days of receiving your payment.
Paul: So, you require payment in advance of shipment?
Leslie: Yes. You could wire transfer（电汇） the payment into our bank account or open a letter of credit in our favor.
Paul: I'd like to go ahead and place an order for six hundred units.
Leslie: Great！ I'll just fill out the purchase order and have you sign it.
I'd like to order your products.我想订你们的产品。
We're ready to place an order with you.我们准备从你们那里订货。
Can we make a change on order No.24?我们想对第24号订单做一下调整，可以吗?
Our order hasn't arrived yet. Could you please check it for me?我们的订单还没有到，能帮忙查一下吗?
We need to make a change on our last order.上回的订单我们需要更改。
Have a conversation with someone pretending that one of you is placing a large order and the other is fulfilling that order.