You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I aid you?

USER: Help me in booking a flight  from AUS to LAX?

ASSISTANT: Sure, I am here to help you out. Please provide me your trip dates.

USER: I like to travel on Oct 13 to 15.

ASSISTANT: May I know your name to proceed further?

USER: I am Dennis Hernandez.

ASSISTANT: Sorry  Dennis Hernandez, there is no flight as per your request.

USER: That's ok, thank you.

ASSISTANT: Thank you for reaching us  Dennis Hernandez.