USER
Hi, I'd like a latte from Starbucks.
latte
coffee_ordering.name.drink
ASSISTANT
From which store?
USER
The one on Shattuck in downtown Berkeley.
Shattuck in downtown Berkeley
coffee_ordering.location.store.accept
Shattuck in downtown Berkeley.
coffee_ordering.location.store
ASSISTANT
What size latte? 
USER
A grande.
grande
coffee_ordering.name.drink.accept
coffee_ordering.size.drink
ASSISTANT
What flavor? 
USER
No flavor, just a latte. 
ASSISTANT
Any sugar?
sugar
coffee_ordering.preference
USER
Yes, please, one equal.
Yes, please, one equal
coffee_ordering.preference.accept
ASSISTANT
Any other upgrades? 
USER
One additional shot of espresso.
espresso
coffee_ordering.preference
ASSISTANT
Do you want whipped cream?
whipped cream
coffee_ordering.preference
USER
No, thank you.
No
coffee_ordering.preference.reject
ASSISTANT
When would you like it ready?
USER
As soon as possible.
ASSISTANT
Anything else?
USER
No, that's it. 
ASSISTANT
Great, I'm ordering your drink. 
USER
Thank you. 
ASSISTANT
Your drink will be ready to pick-up soon from the Starbucks in Berkeley and I've sent a receipt to your mobile device.
USER
Thanks!