You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: Can you please help me in booking the flight ticket from AUS to PHL?

ASSISTANT: May I know your dates on which you are planning to depart and arrive?

USER: Dates are Mar 15 and Mar 17.

ASSISTANT: Are you comfortable with connecting flight or direct flight?

USER: Direct flight required.

ASSISTANT: Please let me know if you have any other specifications, I'll search for the flights according to that.

USER: No.

ASSISTANT:  If you can help me with your name, I can check with the availability of flights.

USER: Jason Walker.

ASSISTANT: Thanks for sharing your details, we are unable to provide flight in between your journey routes.

USER: Not an issue. Thanks for checking.

ASSISTANT: Thank you for choosing us.