You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Dennis Davis.

ASSISTANT: Dennis Davis, how may I assist you today?

USER: I am looking for a flight from PHL to LGA, can you please help me in booking?

ASSISTANT: Sure, I will help you. Please help me with your planned travel dates.

USER: My travelling dates are Feb 15 and Feb 17.

ASSISTANT: Do you need a direct or connecting flight?

USER: I need a connecting flight.

ASSISTANT: Please help me with your desired Airlines to fly.

USER: I prefer normal cost airline.

ASSISTANT: Do you have any other preferences in your journey?

USER: No.

ASSISTANT: Please allow me a minute.

USER: Sure.

ASSISTANT: Dennis Davis, I regret to inform you that there are no active flights available for your journey.

USER: That's ok, thank you for checking.

ASSISTANT: Thank you for reaching us. Have  a great time.