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:
I'm really feeling the earlier one. and now move my sales call to later next week

Ex Output:
user


Ex Input:
The event matching "family dinner" this month is on Saturday the 20th at 4:00 PM.

Ex Output:
agent


Ex Input:
Find an event for tomorrow after 4 pm.

Ex Output:

user