I'd like to order a pizza
What kind of pizza would you like?
I want a pepperoni and onion pizza.
Any other toppings?
No. Just those two. 
Would you like extra cheese?
Yes. Extra cheese will do.
What type of crust would you like?
I want the thin crust.
Okay. What size pizza would you like?
I'll have the large.
To confirm your order. You want a large thin crust pizza with pepperoni and onions and with extra cheese. Is that all?
Yes. Thanks. 
Is there anything else I can order for you?
That would be it. 
Your order has been placed.
Great! Thanks. 
You're welcome. 
How long do you think it would take?
It will be ready to be picked up in about 25 minutes.