Hello how may I help you? I want to buy a backpack from your site. Great, I can help you with that. Which backpack would you like to order? The yellow version. Also I have a coupon code I want to use. I've added it to your cart. What is the coupon code you'd like to apply? 723409. I've attempted to apply that code, but the price of the product didn't change. This may be from an expired code, or using the wrong code for this product. Oh no. That's too bad. Would you still like to check out? No, actually not. Alright, I've cancelled your order