TASK DEFINITION: In this task, you are given a dialogue from a conversation between an agent and a customer. Your task is to determine the speaker of the dialogue. Answer with "agent" or "customer".
PROBLEM:  Sorry, no flights are available on your travel dates.

SOLUTION: agent

PROBLEM: Thank you for choosing us, have a good day.

SOLUTION: agent

PROBLEM: Hello, what help you are looking for?

SOLUTION:
agent

