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".

Input: Consider Input: I didn't find any events on Thursday the 29th after 11:30.

Output: agent


Input: Consider Input: I didn't find any events with Andrew.

Output: agent


Input: Consider Input: THE APPOINTMENT IS CALENDAR FROM 9:00 TO 9:30 AM IS CORRECT TIME


Output: user