Hi, can you order a pizza for me from Horny Goar pizzeria in SF?
Sure what would you like to get.
Just the pizza, it's called meatlovers I believe.
Yes and in what size would you like that?
Make it extra large.
Alright, how about crust type, thin or thick?
Thin of course.
How about sauce type?
Let's go with pesto.
Unfortunately pesto sauce is unavailable, would you like to try garlic sauce instead?
Alright let's go with that instead.
Great. Would you like to add something else.
Yes, add extra cheese.
Anything else?
How about extra pepperoni.
Yes, they can do that, anything else?
No, that is it.
Alright, your order is complete and will be available for pic up in about 25 minute, the receipt is sent to your phone,  anything else I can assist you with? 
Not right now, thx
You are welcome, goodbye.