You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you at this moment?

USER: I am Kevin Perez. I am planning to book a ticket from LAX to AUS. Can you please book a flight ticket for me?

ASSISTANT: Sure, can you please provide your travelling dates to proceed further?

USER: I am planning to travel on 08/05 and return back on 08/07.

ASSISTANT: Kevin Perez, there are no flights available on your requested dates on this route.

USER: That's fine.

ASSISTANT: Thank you for contacting us.

USER: Thank you for your help.