You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: Can you please help me in booking a flight ticket from LAS to AUS?

ASSISTANT: Sure, let me know your trip dates please?

USER: I want to fly on Aug 28 and return on Aug 30.

ASSISTANT: May I know your connection limit?

USER: I need a direct airline.

ASSISTANT: Do you need any other preference?

USER: I would like to depart in the morning time.

ASSISTANT: Can I know your name please to proceed further?

USER: Myself Christopher Harris.

ASSISTANT: Sorry to inform you that there are no flight services available on your given details.

USER: Not an issue.

ASSISTANT: Thanks for reaching us, have a nice day.

USER: Thank you.