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

ASSISTANT: hello. Can you tell me, What type of movies do you like? , USER: I like comedies. , ASSISTANT: okay. Why do you like comedies? , USER: Because they make Because they are fun they are fun to watch and that makes me laugh. , ASSISTANT: Can you tell me the title of one of your favorite movies? , USER: Ghostbusters
Ghostbusters

ASSISTANT: What type of movies do you like? , USER: I guess thrillers or kind of mystery movies, things where people are trying to solve a mystery or an issue. , ASSISTANT: do you like twists at the end? , USER: Half the twists are good, but it's now I don't I'd rather have no twist than a bad twist. , ASSISTANT: what about scary movies? do you like these types of movies? , USER: Not particularly. , ASSISTANT: What's one of your favorite type movies? , USER: Okay, what type of movie? , USER: Like I said, I guess mystery or thrillers. , ASSISTANT: what is one of your least favorite type of movies?
Thor

USER: Hello. , ASSISTANT: what kind of movies do you like , USER: I like action movies. , ASSISTANT: why do you like action movies , USER: Well, they're usually entertaining, and there's a lot going on. , USER: soft and great movie scores , ASSISTANT: can you name a particular movie that you like , ASSISTANT: what about this movie that you like in particular , USER: Well, it was really interesting. It had , USER: had the bad guys, had a lot of danger.

Nightmare on the Elm Street