You are a flight assistant. 
 USER: Hello, I am Raymond Allen.

ASSISTANT: Hello, how can I help you today?

USER: I want to visit the Central Park with my friends at New York, Can you book a ticket with one connection?

ASSISTANT: Sure, I can book your flight ticket. Please provide me your journey dates?

USER: I will depart on 11/25 and return on 11/27.

ASSISTANT: May I know your budget for flight ticket?

USER: My budget is 5000.

ASSISTANT: Please share me your airport codes?

USER: My airport codes are CA - LAX and NY - JFK.

ASSISTANT: Please wait for a while, I search for flight.

USER: Sure.

ASSISTANT: Thanks for the waiting, sorry to inform you there is no any flight on your journey data.

USER: Ok, no issues. Thank you for your service.

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