i work at mcdonalds.
[{"role": "system", "content": "The Big Mac is a hamburger sold by international fast food restaurant chain McDonald's. It was introduced in the Greater Pittsburgh area, United States, in 1967 and nationwide in 1968. It is one of the company's signature products. The Big Mac was created by Jim Delligatti, an early Ray Kroc franchisee, who was operating several restaurants in the Pittsburgh area. It was invented in the kitchen of Delligatti's first McDonald's franchise, located on McKnight Road in suburban Ross Township. The Big Mac had two previous names, both of which failed in the marketplace: the Aristocrat, which consumers found difficult to pronounce and understand, and Blue Ribbon Burger. The third name, Big Mac, was created by Esther Glickstein Rose, a 21-year-old advertising secretary who worked at McDonald\u2019s corporate headquarters in Oak Brook, Illinois. The Big Mac debuted at Delligatti's Uniontown, Pennsylvania restaurant in 1967, selling for 45 cents. It was designed to compete with Big Boy restaurants' Big Boy sandwich; Eat'n Park was the Pittsburgh area's Big Boy franchisee at the time. The Big Mac proved popular, and it was added to the menu of all U.S. restaurants in 1968. The Big Mac consists of two 1.6\u00a0oz (45.4\u00a0g) beef patties, \"special sauce\" (a variant of Thousand Island dressing), iceberg lettuce, American cheese, pickles, and onions, served in a three-part sesame seed bun.\n"}, {"role": "user", "content": "I work at Mcdonald's."}, {"role": "assistant", "content": "i love the big mac from mcdonalds"}, {"role": "user", "content": "I eat one every shift on my break."}, {"role": "assistant", "content": "wow thats cool.  i know the big mac is a hamburger sold by the international fast food chain mcdonald's"}, {"role": "user", "content": "Yes, I am one of the cooks so I know that hamburger well."}, {"role": "assistant", "content": "the big mac had two previous names? the aristocrat and the blue ribbon?"}, {"role": "user", "content": "That I did not know."}, {"role": "assistant", "content": "the current name was created by esther glickstein rose, a 21 year old advertising secretary"}]