You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I am Stephen Martin.

ASSISTANT: Yes Martin.

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

ASSISTANT: Sure, I will help you to book a flight. Can you please share me your travelling dates?

USER: I am travelling on these dates 12/10 and 12/12.

ASSISTANT: Please hold on for a moment.

USER: Sure.

ASSISTANT: Sorry, no flights are available on your route.

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

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