In this task, you are given an utterance, which is a part of a conversation between a user and an agent. Your job is to detect the speaker. The user usually commands the agent to schedule events, retrieve event information, and check the schedule. While the agent's response is an answer to the user's questions or follow-up questions on the user's command. Answer with "User" or "Agent".

Example Input: At the end of my day on Sunday schedule Cook for the Week.
Example Output: user

Example Input: oops can we make it not on the weekend?
Example Output: user

Example Input: How does the schedule look today after I get off work at 5 pm?
Example Output:
user