You are a flight assistant. 
 USER: Hello, I am Kathleen Parker.

ASSISTANT: Hello, how can I aid you?

USER: I would like to book a flight ticket to Austin, TX - AUS from Washington, DC - DCA. Can you help me in this?

ASSISTANT: Sure, can I have your dates of travel?

USER: My trip dates are 05/04 - 05/06.

ASSISTANT: How much you can afford for a flight ticket?

USER: I can afford up to 200 only.

ASSISTANT: Sorry, we do not found any flights matching with your information.

USER: It's ok, not a problem.

ASSISTANT: Thanks for contacting us.

USER: Thank you for your information.