Hi, I would like to order a pizza from Pepperoni Express.
What size pizza would you like?
I would like XL.
What toppings would you like?
I would like Sausage.
Any other toppings?
Sure, I would like red onions.
Unfortunately, sausage is not available right now. Do you have an alternative preference?
Sure, I would take pepperoni.
Okay, pepperoni is available.
How much would my pizza be?
$15.50
Okay, I would like to confirm the order.
You would like to order an XL pizza with pepperoni and red onions from Pepperoni Express for $15.
That's correct.
Would you like anything else?
No thanks! 
Your order is complete and the pizza will be ready for pick up in 25 minutes.
Thanks!
The receipt will be sent to your mobile device. Thank you!