You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you today?

USER: I am planning to visit New York, will you help me in booking the flight ticket from OAK to LGA?

ASSISTANT: Sure, let me know your planned journey dates?

USER: My preferable journey dates are Apr 16 and Apr 18.

ASSISTANT: May I know your connection limit?

USER: I need a flight with single connection.

ASSISTANT: Is there any other specifications?

USER: No, thank you for asking.

ASSISTANT: Can I know your name?

USER: Myself John Johnson.

ASSISTANT: Thanks for your details, there is no flight found on your desired journey routes.

USER: Ok, not an issue. Thank you for your information.

ASSISTANT: Thank you for reaching us.