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: Ok who will be joining me for lunch?

Output: user


Input: Consider Input: Can you schedule a meeting with Greg on Saturday morning?

Output: user


Input: Consider Input: find everything this week called Appointment


Output: user