You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Richard Moore.

ASSISTANT: Richard Moore, how may I assist you today?

USER: I am planning to visit Charlotte, can you please book me a ticket from AUS to CLT?

ASSISTANT: Sure, I will help you. Please help me with your planned travel dates.

USER: I am planning my journey on the dates of Feb 20 and Feb 22.

ASSISTANT: Please help me with you preferred depart and return time.

USER: I prefer to depart in evening flight.

ASSISTANT: Do you need a break in your trip?

USER: I prefer connecting flight.

ASSISTANT: Do you have any other preferences in your journey?

USER: No.

ASSISTANT: Richard Moore, I am sorry to inform you that there are no active flights available as per your needs.

USER: Ok, not an issue. Thank you for providing information.

ASSISTANT: Thank you for reaching us. Have a great time.