You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I guide you at present?

USER: I want to book a flight ticket from PHL to ATL to meet my friend. Can you help me in booking a connected flight?

ASSISTANT: Sure, Let me know your class preference.

USER: I prefer a economy class.

ASSISTANT: When you are planning to travel?

USER: My journey dates are Mar 20 and Mar 22.

ASSISTANT: Do you have any other requirements?

USER: I am looking for a return flight time at evening.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: Sorry to inform you that, we did not found any flights running to that location due to abnormal weather conditions.

USER: No problem, thank you for your information.

ASSISTANT: May I know your name for documentation?

USER: I am Jonathan Lewis.

ASSISTANT: Ok, thank you for availing us.