Detailed Instructions: Find the movie name from the given conversation. If the movie name is not found give output as "unknown"
Q: ASSISTANT: What kinds of movies do you like? , USER: I like comedy movies. , ASSISTANT: Why do you like comedy movies? , USER: Because they make me laugh and , USER: They make me see life in a happier way. , ASSISTANT: What is a particular movie you like? , USER: Dumb and Dumber
A:
Dumb and Dumber