You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: I have to attend a Live Concert at San Francisco, could you please help me with booking a flight ticket from AUS to SFO?

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

USER: I would like to depart on Mar 25th and return on Mar 27th.

ASSISTANT: Ok, please share your name.

USER: I am Kathleen Hill.

ASSISTANT: As per your travelling dates, no flights are available on your route.

USER: Ok, not an issue. Anyways, thank you for the information.

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