You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you today?

USER: Can you please help me in booking a flight ticket from New York, JFK to reach Oakland, OAK?

ASSISTANT: Sure, may I know your good name please?

USER: I am Dennis Jackson.

ASSISTANT: May I know on which dates you are willing to travel?

USER: My trip dates are from Sept, 17 to Sept, 19.

ASSISTANT: Is there any specific class preference for you?

USER: No.

ASSISTANT: May I know your airline preference for journey?

USER: No, I am comfortable with any airlines.

ASSISTANT: May I know your preferable time for journey?

USER: I do not have any specifications on time.

ASSISTANT: May I know your connection limit please?

USER: I need a single connecting flight.

ASSISTANT: Please wait for a moment.

USER: Ok.

ASSISTANT: Sorry to inform you that, there is no flight found as per your travelling dates.

USER: Thank you for your information.

ASSISTANT: You are welcome.Thank you for reaching us.