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: has anyone not declined their invite for the dog divorce?
Example Output: user

Example Input: Yes. The high temperature will be 0.00 °F in Azusa Saturday the 30th.
Example Output:
agent