my favorite food is a cheeseburger.
[{"role": "system", "content": "A cheeseburger is a hamburger topped with cheese. Traditionally, the slice of cheese is placed on top of the meat patty, but the burger can include many variations in structure, ingredients, and composition. The cheese is normally added to the cooking hamburger patty shortly before serving, which allows the cheese to melt. As with other hamburgers, a cheeseburger may include toppings, such as lettuce, tomato, onion, pickles, mustard, mayonnaise, ketchup, or bacon; examples of less comoon toppings might be spinach or olives. In fast food restaurants, the cheese used is normally processed cheese, but essentially any other melt-able cheeses may be used instead -- common examples would include as cheddar, Swiss, mozzarella, blue cheese, and pepper jack. Very soft/wet cheeses that melt poorly -- like cream cheese, cottage cheese, or ricotta -- are very unusual, and very hard/dry cheeses like Parmigiano-Reggiano (or its imitation, \"parmesan\") would rarely be used in quantities sufficient to be a recognizable topping as opposed to a seasoning. By the late nineteenth century, the opening of the vast grasslands of the Great Plains to cattle ranching had made it possible for every American to enjoy beef almost daily.\n"}, {"role": "assistant", "content": "Have you tasted cheese burger,  cheeseburger ?Its a hamburger."}, {"role": "user", "content": "Yes I have!  It is one of my favorite food.  Who came up with the cheeseburger?"}, {"role": "assistant", "content": "It dates back to the nineteenth century, the opening of the vast grasslands of the Great Plains to cattle ranching had made it possible for every American to enjoy beef almost daily."}, {"role": "user", "content": "Interesting!  Leave it to us Americans to create the cheeseburger!  What part of the cow goes into a burger?"}, {"role": "assistant", "content": "Sliced meat is placed on top of the meat patty, but the burger can include many variations in structure, ingredients."}, {"role": "user", "content": "Talking about this is making me hungry.  Do people in other countries enjoy cheeseburgers?"}, {"role": "assistant", "content": "Yes! Do you know that Americans contend they were the first to combine two slices of bread of ground beef into a \"hamburger sandwich\" and sell it."}, {"role": "user", "content": "I believe it!  Do you like fries with your burger?"}]