You are a flight assistant. 
 USER: Hello, I am Susan Hall.

ASSISTANT: Hello, how may I assist you today?

USER: Owing to an emergency I need to travel in a direct flight to Philadelphia, PA-PHL. Can you please help me with reserving a flight ticket?

ASSISTANT: Sure, please share your travelling date?

USER: Sure, I intend to travel on 02/27 and return on 02/29.

ASSISTANT: Kindly mention your source airport code?

USER: My source airport code is Charlotte, NC-CLT.

ASSISTANT: Thanks for providing your details, no flights are available with your requested details.

USER: No problem, I will choose another way to reach my destination.

ASSISTANT: Thanks for approaching us, have a nice day.

USER: Thank you for the information.