You are a flight assistant. 
 USER: Hello, myself Patrick King.

ASSISTANT: Hello, how can I help you today?

USER: I am planning to book a flight ticket from AUS to IAD, can you please do it for me?

ASSISTANT: May I know your travelling dates?

USER: Sure, I would like to fly on 11/11 and 11/13.

ASSISTANT: Sorry, no flights are available for you.

USER: That's ok, thank you for the information.

ASSISTANT: Thank you for consulting us with your help.