Hello how may I help you? Hi, I'm hoping to buy something from your online store, mainly a black sweater Sure I can help you order that. Do you have the item number of the sweater you wished to buy? #1234 I have added that item to your cart. Do you wish to checkout now? Yes, can I use a coupon code? Sure, what is the code? ABCDE Unfortuantely it seems like that coupon code expired last week. Ah that's a shame, ok Proceed with checkout?