It goes about as well as you'd expect. If there is one thing that Cookie Monster isn't prepared to deal with, it's a possible lack of cookies.
In order to get Cookie Monster ready for a trip to the Furchester Hotel, Sesame Street brought in his news desk partner, John Oliver. He easily explains how to say "hello" and "goodbye" in British English. Things only go wrong when he uses "Biscuit Monster" as a name. Why isn't John Oliver just a permanent Sesame Street cast member?