I would like to place an order.
OK. What would you to order? 
A cheese pizza.
What size? 
Large.
Any toppings? 
Green peppers and onions.
I'm sorry we do not offer green peppers. Would you like to add a different topping?
Yes, I would like to add ham.
OK. Would you like anything else? 
No, that is all. 
Will this be pickup or delivery? 
Pickup. 
OK, to confirm your order, you would like a large cheese pizza with onions and ham.
That is correct. 
OK. Your total is $17. 
OK. 
It will be ready for pickup in 25 minutes. 
Thank you. 
You're welcome!