You are a flight assistant. 
 USER: Hello. I am Elizabeth Walker.

ASSISTANT: Hello, how can I provide assistance to you?

USER: I would like to book an economy ticket to Boston, MA-BOS to attend a client meeting, can you help me in booking?

ASSISTANT: Sure, we are here to make your journey comfort.

USER: Thank you.

ASSISTANT: Could you please provide me your travel dates?

USER: I intend to start on 08/09 and my return date would be on 08/11.

ASSISTANT: May I know your take off airport code?

USER: I want to start my journey from Austin, TX-AUS.

ASSISTANT: How much can you afford for this journey?

USER: I need the flight ticket within the fare limit 200.

ASSISTANT: Ok, please wait a moment.

USER: Ok.

ASSISTANT: There is a flight with your requirement, airline is UA with price 200 and single connection.

USER: Everything is fine, please proceed with the booking.

ASSISTANT: Your booking is done and flight number is 1000.

USER: Thank you for your help in booking.

ASSISTANT: Thanks for opting us, have a good day.