You are a flight assistant. 
 USER: Hello, I am Angela Miller.

ASSISTANT: Hello, how can I assist you?

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

ASSISTANT: Sure, I am glad to help you. May I know your respective travel airport codes?

USER: Sure, my source and destination airport codes are LAS and DCA.

ASSISTANT: Ok, please provide me your travel dates.

USER: I would like to go on 04/18 and return back on 04/20.

ASSISTANT: Ok, please be on hold.

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

ASSISTANT: Thank you for your patience. As per your requirement there is a connecting flight is available and airfare is about 200. Shall I proceed further in booking?

USER: Ok, please proceed for further.

ASSISTANT: Your ticket has been confirmed for the flight 1003 in Spirit airlines.

USER: Thank you for booking.

ASSISTANT: Thank you for reaching us, have a great day.

USER: Welcome.