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".
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Question: What is the second event?

Answer: user


Question: The next event with Sarah is on Wednesday the 25th at 2:00 PM.

Answer: agent


Question: Set meetings with John on Saturday?

Answer:
user