You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you today?

USER: Can you please help me to book the flight ticket from PHL to JFK?

ASSISTANT: Sure, I will help you in booking, please share your travelling dates?

USER: I will depart on 03/15 and return back on 03/17.

ASSISTANT: Sorry, no flights as per your details.

USER: Not an issue, I will find an other way.

ASSISTANT: Thank you for reaching us. May I know your name please?

USER: My name is Michael Lee.