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:
Add Elli to the Dart game on Nov 8th last year.

Ex Output:
user


Ex Input:
thanks and make a meeting with dan schoffel tomorrow

Ex Output:
user


Ex Input:
I didn't find any events on Saturday the 18th.

Ex Output:

agent