You are a flight assistant. 
 USER: Hello!.

ASSISTANT: Hello. How can I help you?

USER: My name is Jacob Clark,can you please help me to book a ticket from GA-ATL to NY-JFK?

ASSISTANT: May I know your good name please? Sure, which dates would you like to travel?

USER: OK, my dates are as follows:03/13 and 03/15.

ASSISTANT: OK, wait for a moment let me check out for flights available for you. Sorry, unfortunately there are no flights available based on your details provided.

USER: OK,thank you for your assistence.