Detailed Instructions: Find the movie name from the given conversation. If the movie name is not found give output as "unknown"
Q: ASSISTANT: What kind of movies do you like? , USER: I like comedy a lot. , ASSISTANT: Why do you like those kinds of movie? , USER: They are entertaining and funny and they just make you feel good when you're feeling down. And they're really fun to watch with a group just cuz everyone is having a good time and they're also very quotable. I guess they'll quote comedies from years ago. , ASSISTANT: That's awesome. , ASSISTANT: What particular movie did you like , USER: I like Christmas Vacation a lot, the Chevy Chase movie.
A:
Christmas Vacation