You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you today?

USER: I want to book a flight to EWR for vacation with my friends. Can you book a flight from PHL?

ASSISTANT: Sure, may I know your planned trip dates?

USER: I will travel on Nov 9 and return on Nov 11.

ASSISTANT: Do you have any connection limit?

USER: Yes, I need a connecting flight.

ASSISTANT: Is there any class preference?

USER: It is better to find a business class flight.

ASSISTANT: May I know your arrival and depart timings?

USER: I fine with any flight timing.

ASSISTANT: Do you have any other specifications?

USER: No.

ASSISTANT: May I know your good name?

USER: My name is Emily Wilson.

ASSISTANT: Sorry, there are no flights found on your specified routes.

USER: Ok, thank you for the information.

ASSISTANT: Thank you for availing us.