You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER: Can you please help me in booking a flight ticket from IAD to JFK?

ASSISTANT: Sure, I will help you. May I know your planned travel dates please?

USER: Sure, my travel dates are from June 11 to June 13.

ASSISTANT: May I know your name please to proceed further?

USER: Myself Nancy Parker.

ASSISTANT: Ate you looking for a connecting flight?

USER: I would prefer connecting flight for my trip.

ASSISTANT: Do you have any other specifications?

USER: No.

ASSISTANT: Nancy Parker, no flights has been found on your planned travel dates.

USER: Ok, no problem. Thank you for the information.

ASSISTANT: Thank you for approaching us.