You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I guide you for today?

USER: I am planning to travel from PHL to JFK, help me in booking a flight?

ASSISTANT: Can you please share on what dates you are willing to travel?

USER: My travelling dates are Dec 10 to 12.

ASSISTANT: Are you looking for a connecting flight or direct flight?

USER: I prefer to travel in single connection flight.

ASSISTANT: Do you have any class preferences?

USER: I want to travel in economy class.

ASSISTANT: Do you have any other requirements that you are looking for?

USER: I will be return back on afternoon flight.

ASSISTANT: Can you please provide your name to proceed further?

USER: I am Richard Young.

ASSISTANT: Sorry, there are no flights available at your request.

USER: That's ok, thank you.

ASSISTANT: Thank you for contacting us, have a nice day.