You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you today?

USER: Can you please help me in reserving a flight from PHL to reach PHX?

ASSISTANT:  I am here to help you with your concern. Sure, can you please let me know your trip dates?

USER: Thank you, my travelling dates are Mar 7th and Mar 9th.

ASSISTANT: Would you like to fly with connecting flight or direct flight?

USER: I prefer a single connecting flight.

ASSISTANT: Do you have any specific time concern?

USER: I don't have any other specifications.

ASSISTANT:  Are you willing to fly with any airline for your journey?

USER: I am comfortable in any standard airlines.

ASSISTANT: Could you help me with your name please? So, I can check for the flights availability.

USER: I am Katherine Young.

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

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

ASSISTANT: Thank you for reaching us.