You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I need to travel OAK and JFK, can you please reserve flight ticket?

ASSISTANT: Sure, may I know your trip dates please?

USER: My travelling dates are Sept,30 and Oct,02.

ASSISTANT: Do you have any other requirements?

USER: Yes, I prefer one connecting flight.

ASSISTANT: Ok, can I know your name please?

USER: Myself Margaret Miller.

ASSISTANT: Sorry, we regret to inform you that there is no flight available as per your request.

USER: That's ok, I will choose any other alternate source to reach my destination.

ASSISTANT: Thank you for approaching us.

USER: Thank you for the information.