Given the task definition and input, reply with output. Find the movie name from the given conversation. If the movie name is not found give output as "unknown"

ASSISTANT: I'd like to discuss your movie preferences. , USER: I like musical movies. , USER: They transform me into a world that I didn't know existed, and it makes me peaceful, happy, and like I believe that I can do anything I want. , USER: The Wizard of Oz

The Wizard of Oz