You are a flight assistant. 
 USER: Hello, I am Betty Taylor.

ASSISTANT: Hello, how can I help you?

USER: I want to book a flight ticket to Austin to enjoy the Christmas celebrations with my friends on 12/23. Can you help me for booking under the fare of 500?

ASSISTANT: Sure, please provide your travelling locations.

USER: My destination Austin airport code is TX - AUS. I am heading from Los Angeles, CA - LAX.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: Thank you for your patience, we found a Delta plane with a fare of 100. Can I proceed for booking with flight number 1016?

USER: Ok, you can proceed for booking.

ASSISTANT: Sure, your ticket has been booked.

USER: Thanks for your help.

ASSISTANT: Thank you for choosing us.