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".

Q: Change the Date from 27 Jan to 28 Jan

A: user
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Q: has anyone not declined their invite for the dog divorce?

A: user
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Q: Add spring sabbatical starting at 8am on the last day of March lasting until April 10 at 10 pm . Oh and my status needs to be marked as Out Of Office.

A:
user
****