You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, how may I assist you?

USER: I am Stephanie Lewis. I want to book a flight to attend Masters Golf Tournament in Washington, DCA. Can you help me in booking from Houston, HOU? I need a connected flight.

ASSISTANT: Sure, let me know your travelling dates?

USER: Price should not cross 500. My journey dates on 02/02 to 02/04.

ASSISTANT: Ok, please wait for a moment.

USER: Sure.

ASSISTANT: Thanks for waiting, no flights found with your request.

USER: Ok, no problem. Thank you.

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