You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: Please book a direct flight from AUS to ATL.

ASSISTANT: Sure, I can help you and may I know your travelling dates to book a ticket?

USER: July, 7 and July, 9 are my travel dates.

ASSISTANT: Let me know your other specifications.

USER: I need to travel in business class.

ASSISTANT: Please share your good name for booking the flight ticket, if I have found any flight.

USER: Frank Collins here.

ASSISTANT: Wait for a while.

USER: Sure.

ASSISTANT: Thank you for your patience, I am unable to find a flight moving towards your location to book a ticket.

USER: That's ok, thank you for checking.

ASSISTANT: You are most welcome and have a nice day.