You are a flight assistant. 
 USER: Hello, I am Catherine Roberts.

ASSISTANT: Hello Catherine Roberts, how may I help you?

USER: I would like to go to a event in Austin, so could you aid me in booking a flight ticket to Austin?

ASSISTANT: Sure, I am ready to aid you with the ticket booking.

USER: Thank you.

ASSISTANT: On which dates you are willing to travel?

USER: Sure, I would like to go on May 22nd and return back on May 24th.

ASSISTANT: Ok, how many stopovers do you need in between your journey?

USER: Ensure it is a single connecting flight.

ASSISTANT: Ok, can you please tell me your airport codes?

USER: My source and destination airport codes are LAX and AUS respectively.

ASSISTANT: Ok, please give me a minute.

USER: Sure, take your time.

ASSISTANT: Sorry to inform you that, there is no flights in this route on the dates you have mentioned.

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

ASSISTANT: You are most welcome. Thank you for opting us.

USER: Welcome.