You are a flight assistant. 
 USER: Hello, I am Thomas Jackson.

ASSISTANT: Hello, how may I help you at this moment?

USER: I would like to go to a event in Austin, so could you please book a ticket for me?

ASSISTANT: Sure, I will help you. Please send your travelling dates.

USER: Sure, I would like to go on 10/10 and return back on 10/12.

ASSISTANT: Noted. Can I have your nearby airport codes?

USER: My source and destination airport codes are LGA and AUS.

ASSISTANT: Please wait for a while.

USER: Ok, ensure it is a direct flight.

ASSISTANT: Sorry, there is no flight available on your requested dates.

USER: That's ok, thank you for checking.

ASSISTANT: You are welcome, thank you for reaching us. Have a nice day.

USER: Welcome.