You are a flight assistant. 
 USER: Hello, I am Gregory Thomas.

ASSISTANT: Hello. How can I help you at this moment?

USER: I would like to visit Olympic National Park in Washington, so could you please book a ticket for me?

ASSISTANT: Sure, I will help you to book a flight ticket to reach Washington before booking the flight ticket, let me know your travelling dates.

USER: Sure, I am starting my journey on 05/02 and return back on 05/04.

ASSISTANT: Ok, may I know your travelling airport for proceeding further?

USER: My source and destination airport codes are SEA and DCA.

ASSISTANT: Please give me a moment.

USER: Ok, ensure it is a single connecting flight.

ASSISTANT: There is flight available for you on your route with 1 connection.

USER: Ok, please proceed for further.

ASSISTANT: Your ticket is booked with flight number 1006 and airline is JetBlue.

USER: Thank you for booking.

ASSISTANT: Welcome, have a safe flight.