You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I would like to travel JFK from EWR. Can you please help me to book a flight ticket?

ASSISTANT: Sure, can you please provide your travelling dates to proceed further?

USER: My travelling dates are 12/31 and 01/02.

ASSISTANT: May I know your good name for documentation purpose?

USER: Sure, I am Betty Davis.

ASSISTANT: Betty Davis, there is no flight available on this route due to heavy bookings.

USER: Not an issue, thank you for the information.

ASSISTANT: Thank you for contacting us.