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".

Ex Input:
when is Halloween?

Ex Output:
user


Ex Input:
Please sent up camping trip for this weekend

Ex Output:
user


Ex Input:
defer the next meeting with Elizabeth

Ex Output:

user