I want to order a pizza.
Ok. From Where?
I want to go with Dominos.
Great. What type of pizza?
I want the BBQ Chicken.
Do you want that just with the regular toppings?
No. I want to add pineapple and onions to it.
Sounds good. What size?
I would like a medium.
Great so one medium BBQ Chicken pizza with pineapple and onion added to it.
Yes that is correct.
Oh no. Sorry they don't have pineapple right now.
Darn it. Just leave it off then.
Do you want to replace it with something?
Nope but make it a small instead of a medium.
Great. Is there anything else?
Oh yeah. I forgot to say make it thin crust.
Okay. So it's small BBQ chicken with onions thin crust version.
You got it. 
Fantastic. Your order is in. It will be ready for pickup in 25 minutes.