Find the movie name from the given conversation. If the movie name is not found give output as "unknown"

ASSISTANT: What kind of movies to you like, and why do you like this type of movie? , USER: My favorite type of movie is The Avengers because it has a lot of action, and it's a superhero movies movie. And I love superheros, and I think it's my favorite kind of movie in the world. And I think it's really exciting. It's really exciting, and it's a very popular movie. And it has all sort of cool characters in there, with cool magical powers and abilities. And I think it's the kind of movie
The Avengers