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:
The former one I think

Ex Output:
user


Ex Input:
The event between Sunday the 29th and October 5th is for a half hour.

Ex Output:
agent


Ex Input:
I can only look up names in your address book. Please use a full name and try again.

Ex Output:

agent