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

[EX Q]: USER: Hello. , ASSISTANT: Hello, can you please name one of your favourite movie? , USER: One of my favorite movies is The Dark Knight.
[EX A]: The Dark Knight

[EX Q]: ASSISTANT: What type of movies do you enjoy? , USER: I enjoy indie movies or independent movies. , USER: I enjoy romantic comedies. , ASSISTANT: What appeals to you with these type of movies? , USER: I really enjoy , USER: I think I like having interesting plot ones. , ASSISTANT: Is there a specific movie you enjoy from this genre? , USER: Let me think. I'm trying to remember the name of it. There's a movie. , USER: Well, I like Lady Bird. That's like kind of Indie movie.
[EX A]: Lady Bird

[EX Q]: ASSISTANT: What kind of movies do you like? , USER: I love romantic comedies. I love drama movies. I like suspense movies. , ASSISTANT: what do you like about these kind of movies? , USER: Well, I I usually like the acting, like how sophisticated the acting is. I like to, you know, I like the scenarios, the the plots. I enjoy the scenery in the movie, and the costumes. , ASSISTANT: nice, so a good movie production catches your attention. , USER: Yes, it does. , ASSISTANT: is there any particular movie that you've liked a lot? , USER: Nothing in particular. I mean you know one of my favorite movies is Shawshank Redemption of all time.
[EX A]:
Shawshank Redemption