You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you at this moment?

USER: I planned to meet my friend in OAK, can you please help me to book a flight ticket from JFK?

ASSISTANT: Ok, I am here to help you with that. Could you send me your travelling dates?

USER: I prefer to travel on Jan 10 and Jan 12.

ASSISTANT: Do you have any other requirements?

USER: I prefer to travel in a connecting flight.

ASSISTANT: May I know your name?

USER: I am Carolyn Nelson.

ASSISTANT: May I know your depart and return timings?

USER: I would like to return back in morning.

ASSISTANT: Ok, do you have any airline preference?

USER: No.

ASSISTANT: Please wait for a minute.

USER: Sure.

ASSISTANT: Sorry to say that, there are no flight's available based on your journey details.

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

ASSISTANT: Thank you for approaching us.