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".

Example Input: Make a new meeting today at 4pm called "Budget Meet".
Example Output: user

Example Input: meeting with my mom
Example Output: user

Example Input: Let's fix the appointment with my friend james
Example Output:
user