You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How May I help you?

USER: My name is Anna Lewis. For a business meeting, I would like to visit Philadelphia. Can you please help me with booking a flight ticket from AUS to PHL.

ASSISTANT: Sure, may I know your travel dates, Anna?

USER: The dates are from 12/16 to 12/18.

ASSISTANT: As per your request there is flight-1009 with Delta airline, shall I proceed booking  ticket?

USER: Ok, please proceed.

ASSISTANT: Ok. Your flight has been booked.

USER: Thank you for your response.

ASSISTANT: Thanks for approaching us.