I am really hungry and in the mood for a pizza
Great what pizza please would you like me to order from?
I want a Pizza from Dominos
Ok what about the size?
An large pizza and also a medium one.
There is a 2x1 promo today would you like that one?
Yeah that sounds great can I choose my own toppings though? 
Yeah you can, what toppings do you want?
I want pepper, tomato and mushrooms.
Ok what about the other one.
I want pork with pepperoni and cheese.
Im sorry but pork is not available.
Ok just add jam to it then.
Ok so you are ordering a large vegetables pizza and a medium pepperoni, jam and cheese?
Do I get double of both?
Yeah you do should I proceed with payment?
Yeah please do it.
The total is $27.99 is that ok.
Yeah thats fine just pay with my credit card.
Ok your order will be ready in about 30 minutes.