You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: Can you help me to book a flight from ATL to AUS, can you help me?

ASSISTANT: Sure, may I know your planned trip dates?

USER: My travelling dates are 23 and 25 of Dec.

ASSISTANT: Do you have any connection limit?

USER: I need a connecting flight.

ASSISTANT: Is there any class preference?

USER: I prefer to travel in business class.

ASSISTANT: May I know your arrival and depart timings?

USER: I am ok with any timing.

ASSISTANT: Do you have any other specifications?

USER: No.

ASSISTANT: May I know your good name?

USER: I am Betty Taylor.

ASSISTANT: Please be on hold.

USER: Sure.

ASSISTANT: Sorry to inform you that, there are no flights found on your specified travel dates.

USER: It's ok, not a problem, thank you.

ASSISTANT: Thank you for reaching us.