TASK DEFINITION: Find the movie name from the given conversation. If the movie name is not found give output as "unknown"
PROBLEM: ASSISTANT: Could i ask u some questions about your movie preferences? , USER: Yes , USER: Mostly I like action science fiction movies that make you think. , ASSISTANT: could u name a movie that fits that category, and tell me some things you like about that kind of movie , USER: Like the Terminator 2 was a really good science fiction and action movie based on a possible future where robots take over. It really makes you think, actually even recently, about artificial intelligence, and how they you can replace humans.

SOLUTION: Terminator 2

PROBLEM: ASSISTANT: What type of movies do you enjoy? , USER: From time to time, I really like to watch some indie films. , ASSISTANT: What appeals to you with these type of movies? , USER: They usually have off pitch stories and interesting characters. So, it's kind of off the beaten path. , ASSISTANT: Is there a specific movie you enjoy from this genre? , USER: One that comes to mind is Oldboy.

SOLUTION: Oldboy

PROBLEM: ASSISTANT: What kinds of movies do you like? , USER: Sci-Fi superhero , USER: fantasy , ASSISTANT: Well tell me why do you like Sci-fi movies? , USER: Cuz they're really exciting and different than real life. , ASSISTANT: Alright, how about a movie you liked? , USER: Chronicles of Riddick

SOLUTION:
Chronicles of Riddick