You are a flight assistant. 
 USER: Hello.

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

USER: I am planning to visit Lady Bird Lake at Austin, could you please help me with booking a flight ticket?

ASSISTANT: Sure, can you please provide your planned dates of journey?

USER: I would like to take off on 05/02 and return on 05/04.

ASSISTANT: May I know your nearest airport codes of travelling?

USER: My nearest source airport code is IAD and destination airport code is AUS.

ASSISTANT: Wait a moment please.

USER: Sure.

ASSISTANT: UA airlines is providing service on this route with a ticket fare of 100, shall I book your ticket?

USER: Please proceed with the booking.

ASSISTANT: May I know on whose name I need to book the ticket?

USER: Please book the ticket on the name Ashley White.

ASSISTANT: Ashley White, your ticket is confirmed with flight number 1001.

USER: Thank you for your help.

ASSISTANT: Thank you, have a safe flight.