You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: I would like to book a ticket from AUS to LAS, can you please help me out?

ASSISTANT: Sure, I am here to help you in booking. Can you please share your travel dates?

USER: I am travelling on these dates June 2nd and 4th.

ASSISTANT: May I know your name for further process?

USER: Paul Hernandez here.

ASSISTANT: Sorry, no flights are available on your preferable travel dates.

USER: Ok no problem, thank you for your services.

ASSISTANT: Thank you for reaching us, have a nice day.