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:
Is anyone on my team online?

Ex Output:
user


Ex Input:
what is my first event in summer?

Ex Output:
user


Ex Input:
The next event with Abby is on Friday the 25th at 11:00 AM.

Ex Output:

agent