You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, what sort of help are you seeking from us?

USER: I am planning to attend music concert at PHL, can you please help me with booking a flight ticket from ORD?

ASSISTANT: Surely, I will help you out. When are you planning to start and return?

USER: I would like to take off on Sept 22 and return on Sept 24.

ASSISTANT: Ok, please share your class preference.

USER: I prefer business class.

ASSISTANT: How many connections you prefer in your journey?

USER: I am looking for a connecting flight.

ASSISTANT: Is there any other essentials to say?

USER: I don't have any other preference.

ASSISTANT: May I know your name for further proceedings?

USER: My name is Joseph Anderson.

ASSISTANT: Ok, wait for a while.

USER: Sure.

ASSISTANT: Sorry to say that, no flights are found based on your requirements.

USER: Ok, no issues. Thank you for the information.

ASSISTANT: Thank you for reaching us.