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

ASSISTANT: Hello, how may I assist 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: Nice. Can you let me know your travelling dates?

USER: I would like to go on 01/08 and return back on 01/10.

ASSISTANT: Please share your travelling dates. Please Share your airport codes.

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

ASSISTANT: Please wait for a moment.

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

ASSISTANT: There is a flight available with Spirit airline having 1 stop, shall I continue?

USER: Ok, please proceed for further.

ASSISTANT: Your booking is done with flight number 1002. Happy journey.

USER: Thank you.

ASSISTANT: You are welcome. Thank you for reaching us, have a nice day.

USER: Welcome.