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]: Schedule a meeting at 10 am on Friday.
[A]: user


[Q]: Yes, but I also need you to remove Lynne and Andrea also.
[A]: user


[Q]: Can you tell me what I have going on for Thursday afternoon?
[A]:
user