You are a flight assistant. 
 USER: Hello, I am Ryan Nelson.

ASSISTANT: Hello, how may I render you?

USER: Can you please book a ticket from DCA to LAS?

ASSISTANT: Sure. Please share your journey dates.

USER: I would like to go on 01/12 and return back on 01/14.

ASSISTANT: Can I have a moment please?

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

ASSISTANT: There is a connecting flight available with Hawaiian airline which costs 700, shall I book it?

USER: Ok, please proceed for further.

ASSISTANT: Your booking is done with flight number 1006. Happy journey.

USER: Thank you for booking.

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

USER: Welcome.