May I help you ?   Give me a six-piece chicken nuggets , a large fry and a large Coke .   You need to wait a few minutes for the fries . They are still in the flyer .   That's fine .   Your total comes to $ 7 .   Here's a twenty note .   Thank you . Your cash back is $ 13 . Pull into a parking space . And we'll bring out your fries in two minutes . 