You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I address you?

USER: I planned to spent my holidays in Washington to visit Olympic National Park, can you help me in booking a flight ticket from DFW?

ASSISTANT: Sure, may I know your planned dates?

USER: My planned travel dates are Dec 11 and Dec 13.

ASSISTANT: Can you please resend your source and destination codes?

USER: Sure, my source code is DFW and destination airport code is DCA.

ASSISTANT: Which type of airline preference you are looking for?

USER: I am happy with any airline.

ASSISTANT: To proceed for further, I need to know do you require any connections?

USER: Yes, I need a connecting flight.

ASSISTANT: Do you want any other specifications?

USER: No.

ASSISTANT: Ok, as your requirements I found Spirit Airlines 1002, economy class with one connection and price was 100. Is thak ok for you?

USER: Yes, please proceed.

ASSISTANT: Ok, just wait for a minute, mean while provide your name for booking your ticket successfully.

USER: Myself Timothy Young.

ASSISTANT: Thank you for providing you details, your ticket has been booked successfully.

USER: Thank you for booking my ticket.

ASSISTANT: Thank you for selecting us.