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:
What is the humidity in canton michigan?

Ex Output:
user


Ex Input:
Put a meeting with Jack on my schedule for tomorrow at 1pm.

Ex Output:
user


Ex Input:
I've put that on your calendar. Your status is set to Busy. I didn't find any events on Tuesday the 5th.

Ex Output:

agent