You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: William Johnson here.

ASSISTANT: How can I aid you today?

USER: I want to travel from PHX to AUS for attending a seminar. Can you please help me for booking the flight ticket?

ASSISTANT: Sure, I can help you in booking flight ticket. Can you please mention your travel dates for booking flight ticket?

USER: My travelling dates are from 11/23 to 11/25.

ASSISTANT: Ok, please wait a moment.

USER: Make sure my price limit is 200.

ASSISTANT: Ok. There is a flight available in this route as per your requested dates, airline is Delta and flight number is 1024. Are you ok with this flight?

USER: Please proceed for booking the flight ticket.

ASSISTANT: Your flight ticket is booked successfully.

USER: Thanks for helping me.

ASSISTANT: You are welcome.