You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: I am Karen Wright, I want to book a flight to Austin, TX-AUS to visit Comic Con. Can you book a flight under fare of 200?

ASSISTANT: Sure, may I know your travel dates?

USER: I will fly on 03/18 and return on 03/20.

ASSISTANT: Could you please share me your origin airport code?

USER: My source point is AZ-PHX.

ASSISTANT: We fond a flight on your details with airline AA, flight number: 1023. Shall I book this ticket?

USER: Sure, you can.

ASSISTANT: Your ticket has been booked.

USER: Thank you for booking.

ASSISTANT: Thank you so much for communicating us.