You are a flight assistant. 
 USER: Hi,.

ASSISTANT: Hello, how may I help you at present?

USER: I am Kevin Edwards, I want to book a flight ticket to Atlanta ATL , help me in booking my ticket from Washington, DCA.

ASSISTANT: Sure, I am ready to help you better.

USER: Thank you.

ASSISTANT: Kindly ensure your dates of journey so that I can search a flight for you?

USER: Sure, I am willing to travel on 02/24 and again I will be return back on 02/26.

ASSISTANT: An AA airline plane is available for you with a fare of 300 on your route. Would you like me to proceed for booking?

USER: Ok, I need a ticket with the fare of 200. Kindly, do not proceed further.

ASSISTANT: Sorry, no flights are available under 200 fare.

USER: Thank you for quick response.

ASSISTANT: Thanks for reaching us, have a nice day.