USER
I want you to order me an extra large pizza for the Super Bowl Party I'm having.
extra large
pizza_ordering.size.pizza.accept
pizza_ordering.size.pizza.accept
ASSISTANT
yes, ok do you want any extra toppings?
USER
I will take extra cheese and mushrooms
extra cheese
pizza_ordering.preference
pizza_ordering.preference.accept
mushrooms
pizza_ordering.type.topping
pizza_ordering.type.topping
ASSISTANT
is that everything?
USER
No, let me change that, wait a minute
ASSISTANT
Ok, 
USER
ok, change that to ham & pineapple
ham
pizza_ordering.type.topping
pizza_ordering.type.topping
pineapple
pizza_ordering.type.topping
pizza_ordering.type.topping
ASSISTANT
ok
USER
no, i've changed my mind again
ASSISTANT
ok, no problem
USER
make it one half ham and pineapple
half ham
pizza_ordering.type.topping.accept
ham
pizza_ordering.type.topping.accept
pineapple
pizza_ordering.type.topping.accept
pizza_ordering.type.topping.accept
ASSISTANT
yeah, ok
USER
and one half mushroom and onion
half mushroom
pizza_ordering.type.topping.accept
mushroom
pizza_ordering.type.topping.accept
onion
pizza_ordering.type.topping.accept
pizza_ordering.type.topping.accept
ASSISTANT
ok, are you sure that's it?
USER
yes, i'm sure. no more changes
ASSISTANT
what particular location do you want to pick it up at?
USER
at Carlisle Road in Dover
Carlisle Road in Dover
pizza_ordering.location.store
ASSISTANT
Ok, I will call them now and call you back with confirmation of the order.
USER
ok, thank you very much
ASSISTANT
Hello, I'm calling back with the confirmation. It will be ready to pick up in about 25 minutes from the Carlisle Road in Dover locaton
Carlisle Road in Dover locaton
pizza_ordering.location.store.accept
USER
Wonderful, I'm on my way
ASSISTANT
Anything else I can help you with?
USER
No, you've been wonderful, have a great evening and thanks again