USER
I'd like to place an order from Starbucks.
ASSISTANT
Great, which location?
USER
I'd like to pick it up from the one on Main street.
Main street
coffee_ordering.location.store
coffee_ordering.location.store
ASSISTANT
Ok, what would you like.
USER
I'd like a tall chai tea latte
tall
coffee_ordering.size.drink
coffee_ordering.size.drink
chai tea latte
coffee_ordering.name.drink
ASSISTANT
Great, which kind of milk would you like.
USER
I want skim milk please
skim
coffee_ordering.type.milk
skim milk
coffee_ordering.type.milk
ASSISTANT
Ok, would you like to add whipped cream?
whipped cream
coffee_ordering.preference
coffee_ordering.preference
USER
Yes please, actually I'd like a Venti instead of the tall.
Venti
coffee_ordering.size.drink
coffee_ordering.size.drink
tall
coffee_ordering.size.drink.reject
coffee_ordering.size.drink
ASSISTANT
Great, do you want anything else? 
USER
No that will be it.
ASSISTANT
Ok, what time would you like to pick this up.
USER
2pm please.
ASSISTANT
Ok, let me confirm your order and make sure they can have it ready by 2pm.
USER
Ok
ASSISTANT
Alright, I have it confirmed. You will be picking your order up at 2pm at the Starbucks located on Main street. You will be picking up a Venti chai tea latte with skim milk and whipped cream.
Main street
coffee_ordering.location.store.accept
coffee_ordering.location.store.accept
Venti
coffee_ordering.size.drink.accept
coffee_ordering.size.drink.accept
chai tea latte
coffee_ordering.name.drink.accept
coffee_ordering.name.drink.accept
skim
coffee_ordering.type.milk.accept
skim milk
coffee_ordering.type.milk.accept
whipped cream
coffee_ordering.preference.accept
coffee_ordering.preference.accept
USER
That is correct
ASSISTANT
Ok, great they will be sending you a receipt via a text message on your mobile device.
USER
Great thank you so much for your service.
ASSISTANT
You're welcome!