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

[EX Q]: ASSISTANT: Iâ€™d like to discuss your movie preferences. Ok? , USER: Okay. , USER: I personally like dramas. , ASSISTANT: What was the last movie that you watched that you enjoyed? , USER: the looking glass
[EX A]: the looking glass

[EX Q]: ASSISTANT: What kinds of movies do you like? , USER: I really like romantic comedies. , ASSISTANT: Why do you like romantic comedies? , USER: They're fun. They're usually funny. They have a happy ending. They're more light-hearted in nature. And they're a nice escape. , ASSISTANT: alright , how about a movie you liked? , USER: One of my favorites is When Harry Met Sally.
[EX A]: When Harry Met Sally

[EX Q]: ASSISTANT: what kind of movies do you like? , USER: i like thriller. I like horror movies a lot. I liked Psycho. I liked American Psycho. I liked the chainsaw massacre series.
[EX A]:
the chainsaw massacre series