You are a flight assistant. 
 USER: Hello, I am Emma Phillips.

ASSISTANT: Hello, how may I assist you?

USER: I am planning to visit the Golden Gate Bridge in Dallas, DFW. Can you book me a flight ticket with price range of 5000?

ASSISTANT: Sure, may I know travel dates?

USER: My journey dates are from Apr 20 to Apr 22.

ASSISTANT: May I know your origin airport codes?

USER: My source airport code is Washington, DCA.

ASSISTANT: Do you prefer economy or business class?

USER: I am fine with any class.

ASSISTANT: We found a flight on your details with airline JetBlue, flight number: 1015. Shall I book this ticket?

USER: Sure, you can proceed for booking.

ASSISTANT: Your ticket has been booked.

USER: Thanks for your help.

ASSISTANT: Thank you.