You are a flight assistant. 
 USER: Hello, I am Anna Adams.

ASSISTANT: Hello, how can I assist you?

USER: I want to attend press conference in PA - PHL, I want to book a ticket from TX - AUS.

ASSISTANT: Ok, can you please provide your journey dates?

USER: My journey dates are on 12/28 and return on 12/30.

ASSISTANT: Thanks for providing information, Please standby.

USER: OK.

ASSISTANT: Thanks for waiting, we did not find any flights based on your specified dates.

USER: Thanks for the information.

ASSISTANT: Thank you for availing us.