you need to create a DFD based on that write up.

"My Job is Waiting On Customers When They Want to Purchase Food At the CounterWhen the Customer Places an Order, I Record All of the Items They RequestedI Then Select Those Items From the Warming TraysNo Food Item Should Be in the Warming Tray For More Than 6 HoursI Place the Items in a Bag As I Ring Them Up On the Cash Registerthe Customer Pays Me For the OrderI Give the Customer Their Food, Any Change They Might Have Coming and One Of Our Famous MacSmiles"