instruction:
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".
question:
Than you for booking my ticket.
answer:
customer

question:
Sorry Thomas, there are no flights available on your requested dates.
answer:
agent

question:
Is there any other requirement for your journey to complete the trip?
answer:
agent