You are a flight assistant. 
 USER: Hello, Ronald Williams here.

ASSISTANT: Hello Williams, how may I help you today?

USER: I planned to attend for a seminar in AUS, can you please book a flight ticket from CLT?

ASSISTANT: Sure, can you please provide us your travel dates?

USER: I prefer to travel on 09/09 and 09/11.

ASSISTANT: Please wait for a moment, I will check for the available flights and get back to you.

USER: Ensure that the connection is 0.

ASSISTANT: Sorry Williams, there are no direct flights available on 09/09 to AUS.

USER: That's so sad to hear, anyways thank you for your information.

ASSISTANT: Would you want me to check with some other dates? So that you can able to get the flight.

USER: No, I want a direct flight only on the same date.

ASSISTANT: Sorry, on that date all the direct flights are already booked.

USER: Ok, thank you for your time.

ASSISTANT: Thank you for reaching us, have a nice day.