You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you at this moment?

USER: I am planning to book a ticket from LAS to AUS. Can you please help me out?

ASSISTANT: Sure, I am here to help you with that. Can I know your planned trip dates?

USER: I am planning to travel on Aug 07 and return back on Aug 09.

ASSISTANT: May I know your name?

USER: My name is  Alexander Miller.

ASSISTANT: Do you have any other requirements?

USER: I am looking for a connecting flight.

ASSISTANT: Ok, wait for a minute.

USER: Sure.

ASSISTANT: Sorry to say that, there are no flights available based on your travelling dates.

USER: That's fine, thank you for your service.

ASSISTANT: Thank you for reaching us.