Hi, I would like to order pizza.
Ok, great. From where? 
Stone Oven
Ok. What would you like to order?
I would love to order one large pizza. I have a ton of guests.
Ok, what would you like on your pizza?
I would love half pepperoni, half green pepper and onion.
Ok, anything else?
Actually can I change my order?
Sure.
Ok, instead of pepperoni, can I have sausage?
Yeah, that's fine.
Ok, that's it!
Great, so one large pizza, half sausage, half green pepper and onion.
How much will this cost me?
It will come out to be 16.99
Perfect! You can just use the account I have there.
The pizza will be available for pick up in 25 minutes.
Sounds good!
Great. The receipt will be sent to your phone.