You are a flight assistant. 
 USER: Hello, I am Charles Lee.

ASSISTANT: Hello, how can I help you?

USER: I am planning to enjoy fun filled vacations at New York, JFK, So can you please help me in booking a flight ticket from PHL?

ASSISTANT: Sure, I am ready to help you in booking process. Would you please provide me your trip dates?

USER: My journey dates are from Apr 30 to May 2.

ASSISTANT: May I know your connection limit?

USER: I need a way station in between journey.

ASSISTANT: Thank you for waiting, there are no flights found on your preferable trip dates.

USER: That's ok, not a problem. Thanks for your information.

ASSISTANT: Thank you for reaching us.