You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: Myself Charles Allen. I need to schedule my trip to New York for next weekend. Could you please help me in booking the ticket from JFK to EWR?

ASSISTANT: Sure Allen, may I know your travel dates for availability of flights?

USER: I will drop-off 02/21 and again I will be return back on 02/23.

ASSISTANT: There are no flights available at this moment, Allen.

USER: Not a big problem, anyhow thank you very much for your information.

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