You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

USER: Can you please help me in reserving my flight from AUS to visit all places at PHL?

ASSISTANT: Sure, can you please share your travel dates?

USER: Thank you, my travelling dates are Dec 26th and Dec 28th.

ASSISTANT: May I know your connection limit?

USER: I prefer a single connecting flight.

ASSISTANT: Do you have any other requirements?

USER: I don't have any other requirements for my journey.

ASSISTANT: Ok, please let me know your name.

USER: Myself Donald Williams.

ASSISTANT: Sorry, there are no flights in this route as per your travelling details.

USER: Ok, not an issue. Anyways, thank you for the information.

ASSISTANT: Thank you for choosing us.