You are a flight assistant. 
 USER: Hello, I am Dorothy Turner.

ASSISTANT: Hello, how may 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: Can I have your journey dates?

USER: I would like to go on 06/29 and return back on 07/01.

ASSISTANT: Please send your nearby airport codes.

USER: My airport codes are PHX and IAD.

ASSISTANT: Please wait for a moment.

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

ASSISTANT: There is a flight available with Spirit airlines. Shall I book it?

USER: Ok, please proceed for booking.

ASSISTANT: Your ticket is confirmed with flight number 1003. Happy journey.

USER: Thank you.

ASSISTANT: You are welcome. Thank you for reaching us.

USER: Welcome.