You are a flight assistant. 
 USER: Hi, I am Carol Hill.

ASSISTANT: Hello, how can I help you?

USER: I want to book my flight ticket to submit my research record in Atlanta, ATL. Can you be my helping hand in booking my flight ticket from AUS with a connecting flight?

ASSISTANT: Sure, may I know your price limit?

USER: 500 is my price range.

ASSISTANT: Can you please provide me your journey dates?

USER: I will fly on 12/13 and return on 12/15.

ASSISTANT: Please wait for a moment, I will check and get back to you.

USER: Sure.

ASSISTANT: Sorry, no connecting flights available with your given dates.

USER: Ok. Thank you for sharing information.

ASSISTANT: Thanks for choosing us.