You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you at this moment?

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

ASSISTANT: Sure, can I have your journey dates?

USER: My itinerary dates are 05/29 and 05/31.

ASSISTANT: Please provide your nearby airport codes. Can I have a moment please?

USER: My airport codes are AUS and DCA.

ASSISTANT: Noted. Please wait for a while.

USER: Sure.

ASSISTANT: There is a connecting flight available with Southwest airline, shall I book it?

USER: Please book my ticket.

ASSISTANT: Your booking is done with flight number 1022.

USER: Thank you for assisting me.

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