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".

Q: Flight 1011 in Spirit airlines is available for you with 1 stopover and it costs you 200 in economy class. Can I proceed?

A: agent
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Q: Please provide your travel dates.

A: agent
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Q: I am Donna Walker, can you help me to book a flight from DEN on 11/12?

A:
customer
****