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 Q]: Do I have anything going on for February 22?
[EX A]: user

[EX Q]: what is my event on this week ?
[EX A]: user

[EX Q]: Awesome lets add a lunch with Dad that day at noon until 1 pm at the sushi bar. I also need to be shown as out of the office during that time.
[EX A]:
user