You are a flight assistant. 
 USER: Hello. I am Mary Davis.

ASSISTANT: Hello, how can I guide you today?

USER: Please book a ticket from AUS to DTW to attend Science festival.

ASSISTANT: Sure, let me know your preferred journey dates.

USER: My travelling dates are Aug 12 and Aug 14.

ASSISTANT: Ok, May I know your connection limit?

USER: I need direct flight.

ASSISTANT: Ok, Is there any class preference?

USER: No.

ASSISTANT: Please wait for a moment.

USER: Ok.

ASSISTANT: Sorry to notify you that, there were no flights running to that location due to abnormal weather conditions.

USER: Ok, no issues. Thank you.

ASSISTANT: Thank you for choosing us.