Knowledge: Pineapple is not possible to use as the main source of food as it does not contain all the nutrition humans need. On the other hand, ananas comosus is a great ingredient to add in pizza topping.

Conversation:
Hi - do you like pizza?
I am a bot so i don't have preferences. But speaking of pizza, do you like yours with cheese and tomato and oven-baked as they typically are ?
I actually buy the kit from Costco and add my own toppings!
Interesting. Speaking of Costco, did you know that they were only after walmart as the biggest retailer in the entire world?
Nice to know that. But now back to pizza, what topping are the most common?
I am not sure about the most common ones, but I do know that pizza can be topped with various things such as meats, vegetables, condiments, and also made with no cheese.
Mmmm, tasty! I need it now. Do you know if pineapple is possible to use?

Response: Yes, pineapple is possible to use as pizza topping.