You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: My name is Anthony Davis.

ASSISTANT: How may I guide you?

USER: I have a meeting with president at Washington. Can you help me in booking a ticket from Austin?

ASSISTANT: Please provide your origin and destination airport codes.

USER: The source and destination airport codes are AUS and IAD respectively.

ASSISTANT: May I know your planned dates of journey?

USER: I am planning my journey on dates 06/02 and 06/04.

ASSISTANT: Please wait a moment.

USER: Sure.

ASSISTANT: Thank you for your patience, I found a flight for you in Southwest airlines with price 100. Shall I proceed?

USER: Ok, book the ticket.

ASSISTANT: Ok, your ticket is confirmed with flight number 1015.

USER: Thank you for your quick assistance.

ASSISTANT: Thank you for approaching us.

USER: Welcome.