You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Sandra Robinson.

ASSISTANT: How can I help you today?

USER: Could you please help me in flight ticket booking process from ATL to AUS?

ASSISTANT: Sure, I am here to help you with that.

USER: Thank you.

ASSISTANT: Please provide me your travelling airport codes.

USER:  I want to take off on Aug 11 and book my return ticket also on Aug 13.

ASSISTANT: Can you have any connection limit?

USER: I need 1 break in my journey.

ASSISTANT: Is there any time concern?

USER: I want to return in afternoon time.

ASSISTANT: Just give a moment.

USER: Ok.

ASSISTANT: Sorry, no flights are found as per your requirements.

USER: Oh! It's ok no problem. Thank you for your information.

ASSISTANT: Thank you for opting us.