Detailed Instructions: Find the movie name from the given conversation. If the movie name is not found give output as "unknown"
Problem:ASSISTANT: What kind of movies do you like? , USER: I really like science fiction and action movies a lot. , ASSISTANT: what do you like about these kinds of movies? , USER: They are interesting to see what things they come up with and how they think the future will look. , ASSISTANT: is there any particular movie that you've liked a lot? , USER: Yeah, really liked Back to the Future which is an older movie, but I thought it had a great plot with an interesting premise.
Solution:
Back to the Future