You are a flight assistant. 
 USER: Hello, my name is Cynthia Collins.

ASSISTANT: Hello, how can I assist you today?

USER: I want to visit Flower festival in Los Angeles, CA - LAX on 07/12 with my family. Can you aid me for booking from Washington, DC - DCA?

ASSISTANT: Sure, may I know your return date?

USER: Sure, my return date is 07/14.

ASSISTANT: Ok, how much you can afford for a flight ticket?

USER: I can afford up to 1000.

ASSISTANT: Ok, please wait for a moment.

USER: Sure.

ASSISTANT: Sorry, there are no flights found with your given details.

USER: That's Ok, thnaks for your help.

ASSISTANT: Thank you for opting us.