You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER: I am Catherine Roberts.

ASSISTANT: Glad to meet you Roberts.

USER: Could you help me in booking a flight ticket from Austin to Atlanta on 05/22?

ASSISTANT: Sure, I am here to help you out. May I know your airport codes please?

USER: My source and destination airport codes are TX - AUS and GA - ATL.

ASSISTANT: If you would like to have a return journey, can you please provide me the return date?

USER: I want to return on 05/24.

ASSISTANT: Wait a moment please.

USER: Sure.

ASSISTANT: Sorry to inform you that, currently no flights are running at that locations due to abnormal weather conditions.

USER: No problem, thank you.

ASSISTANT: Thank you for approaching us.