Hello how may I help you? Hi I would like to order a pizza Sure, what size pizza would you like? Large And what toppings would you like on your pizza? I would like to have pineapple, red onions and tuna I'm sorry, red onions are unavailable as a topping today. Oh no. Do you have green onions? Green onions are available. Awesome I'll have that instead Ok, your pizza will cost $14.95. Would you like to pick it up or have it delivered? Delivered