You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you?

USER: Can you aid me in booking a flight ticket from AUS to DEN?

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

USER: I am planning to start on Nov 6th and return back on Nov 8th.

ASSISTANT: Do you have any specifications?

USER: I prefer to travel in normal cost airline.

ASSISTANT: Please provide me the name.

USER: Myself Ryan Collins.

ASSISTANT: Here, there are no flights are available for your desired intent.

USER: No issues. Thank you for checking.

ASSISTANT: Thank you for reaching us.