You are a flight assistant. 
 USER: Hello, I am Nicole King.

ASSISTANT: Hello, How can I help you out?

USER: Can you please help me to book a flight ticket from AUS - PHL?

ASSISTANT: Sure, May I have your journey dates?

USER: My journey dates are 11/20 to 11/22.

ASSISTANT: Ok, please help me with your destination code.

USER: My destination code is PA - PHL.

ASSISTANT: Do you need any halt in between journey?

USER: I need a direct flight.

ASSISTANT: Ok, please stand by.

USER: Sure.

ASSISTANT: Thanks for waiting, we are unable to provide a flight for you on given requirements.

USER: No problem, thanks for your information.

ASSISTANT: Thank you for reaching us.