Thank you for contacting Acme.  How may I help you today?
Hello, I wanted to buy an item yesterday but now it's much more expensive today. Is there anything I can do to get the old price?
Oh, I'm sorry to say that our prices are set by an algorithm, based on a lot of different factors, most of which are out of my control If I could take a look at your account, there might be something I can do
Okay, my account username is joycewu6 and ID is C59MAXWXOC
Thanks.  And may I also ask your full name and the Order ID of any recent purchase?
My full name is Joyce Wu and I recently purchased a shirt with order ID 2248240521
Thanks, Ms Wu. So based on your purchase history with us, I can issue a promo code that should cover the difference in prices this time.  However, as a general rule, our prices are mostly set in stone

The code NAVC5 should serve your needs at checkout
Thank you so much.
You're welcome.  Is there anything else I can help you with today?
No, thanks again.
Okay.  Have a good day, Ms. Wu