You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you for the day?

USER: Nicholas Wright here. Could you book my ticket in a connecting flight?

ASSISTANT: Sure, when are you planning to travel?

USER: My itinerary dates are Sept 5 and Sept 7.

ASSISTANT: Can I know your airport codes?

USER: My genesis and terminus airport codes are JFK and PHL.

ASSISTANT: Do you prefer a connecting flight?

USER: I need a connecting flight.

ASSISTANT: In which class do you prefer to travel?

USER: I have no class preferences, I want to return in the afternoon.

ASSISTANT: At what time do you prefer to depart and return on?

USER: I already mentioned.

ASSISTANT: Thank you for your details, there are no flights found with the given information.

USER: No problem, thank you.

ASSISTANT: Thank you.