USER
Hi I want to order a pizza
ASSISTANT
Sure sir from where
USER
I want to order it from dominos
dominos
pizza_ordering.name.store
pizza_ordering.name.store.accept
ASSISTANT
Sure sir what kind of pizza
USER
I want to order a veg extravaganza
veg extravaganza
pizza_ordering.name.pizza
pizza_ordering.name.pizza
ASSISTANT
Sure sir what size
USER
Medium size pizza
Medium
pizza_ordering.size.pizza
pizza_ordering.size.pizza
ASSISTANT
Sure sir what type of crust
USER
What options I have 
ASSISTANT
Sir thin crust, cheese burst
thin crust
pizza_ordering.type.crust
pizza_ordering.type.crust
cheese burst
pizza_ordering.preference
USER
I will go for thin crust
thin crust
pizza_ordering.type.crust
pizza_ordering.type.crust.accept
ASSISTANT
Veg extravaganza comes with onion, pepper, pineapple, mushroom and olives
Veg extravaganza
pizza_ordering.name.pizza
pizza_ordering.name.pizza
onion
pizza_ordering.type.topping
pizza_ordering.type.topping.accept
pepper
pizza_ordering.type.topping.accept
pizza_ordering.type.topping
pineapple
pizza_ordering.type.topping.accept
pizza_ordering.type.topping
mushroom
pizza_ordering.type.topping.accept
pizza_ordering.type.topping
olives
pizza_ordering.type.topping
pizza_ordering.type.topping
USER
Can I change olives with tomato
olives
pizza_ordering.type.topping
pizza_ordering.type.topping.reject
tomato
pizza_ordering.type.topping
pizza_ordering.type.topping
ASSISTANT
Sure sir what kind of cheese
USER
American cheese
American cheese
pizza_ordering.preference
pizza_ordering.type.topping
ASSISTANT
Sure sir how you like your pizza
USER
I like it well baked and crispy
well baked
pizza_ordering.preference
crispy
pizza_ordering.preference
ASSISTANT
Sure sir anything else
USER
No
ASSISTANT
Let me confirm you are looking for a medium size extravaganza with tomato instead of olives with American cheese and you want it well baked
medium
pizza_ordering.size.pizza.accept
pizza_ordering.size.pizza.accept
extravaganza
pizza_ordering.name.pizza.accept
pizza_ordering.size.pizza.accept
tomato
pizza_ordering.type.topping.accept
pizza_ordering.type.topping.accept
olives
pizza_ordering.type.topping.reject
pizza_ordering.type.topping.reject
American cheese
pizza_ordering.preference.accept
pizza_ordering.type.topping.accept
well baked
pizza_ordering.preference.accept
USER
Perfect
ASSISTANT
Your order total is $17. Can I use the same payment method as last time 
USER
Yes
ASSISTANT
Your payment is successful and your order will be ready for pickup in 25 mins
USER
Thank you
ASSISTANT
Also your receipt will be sent to your mobile 
USER
Thank you
ASSISTANT
Anything else
USER
No
ASSISTANT
Thank you sir have a nice day