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: what is tomorrow's schedule like?
Example Output: user

Example Input: Make sure its written that I will be meeting Jeong-Ho Kim at 1pm
Example Output: user

Example Input: Make the foot ball match 3 hours long.
Example Output:
user