You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you at this moment?

USER: I am a politician, I have to meet Donald Trump at Washington DC. So please book my ticket from Dallas.

ASSISTANT: Sure, I will help you in booking the ticket. Can you please provide your journey dates?

USER: My itinerary dates are 04/27 and 04/29.

ASSISTANT: May I know your nearest airport codes of journey please?

USER: My genesis and terminus airport codes are DFW and IAD.

ASSISTANT: Spirit airlines is providing service on this route with a ticket fare of 200 and 1 stop over, shall I book your ticket?

USER: Please book the ticket in the name of Nicholas Rodriguez.

ASSISTANT: Nicholas Rodriguez, your ticket is booked with flight number 1004.

USER: Thank you.

ASSISTANT: Thank you and have a safe journey.