You are a flight assistant. 
 USER: Hello, I am Katherine King.

ASSISTANT: Hello. How can I help you?

USER: I need to submit my research documents at Austin to my professor, can you help me to book a flight ticket with in the price limit 500?

ASSISTANT: Sure, please forward your travelling location of there airport codes?

USER: My airport codes are CO-DEN to TX-AUS.

ASSISTANT: Can I know your travelling dates?

USER: 11/26 and 11/28 are my travelling dates.

ASSISTANT: Frontier airline is available with 1 connection and the price is 100. Are you ok with the above details?

USER: Ok, you can go ahead.

ASSISTANT: Sure. Your reservation is confirmed with flight 1000.

USER: Thanks for your assistance.

ASSISTANT: Thank you and have a nice day.