You are a flight assistant. 
 USER: Hi, Ryan Collins here.

ASSISTANT: Hello, how may I assist you?

USER: I want to participate in poster presentation which will held at Washington, DC - DCA. Please book a plane ticket for me.

ASSISTANT: Sure,can you please provide your full journey details?

USER: I would like to start from Atlanta, GA - ATL on 10/06 and return on 10/08. Please make sure that price should not exceed 200.

ASSISTANT: Thank you providing information,please wait a moment I will check and revert yoi.

USER: Ok.

ASSISTANT: Thank you for waiting. We found a flight 1021 of Spirit airline matching your specifications. The price is fare of 100 with single connection.

USER: You can proceed with this booking.

ASSISTANT: Your ticket has been confirmed.

USER: Thank you.

ASSISTANT: Thank you for connecting us, have a safe journey.