You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, how can I provide assistance to you?

USER: Will you give assistance to book a ticket from New York to Oakland?

ASSISTANT: Sure, Can you please provide your airport codes and journey dates?

USER: Yes, My boarding airport is NY - LGA on Dec 23rd, return boarding airport is CA - OAK on Dec 25th. And I need a direct flight.

ASSISTANT: OK, May I know your good name?

USER: Jacob Moore.

ASSISTANT: OK, please wait a moment.

USER: OK,.

ASSISTANT: Thanks for your time, no flight found with your requirement.

USER: OK, no issues.

ASSISTANT: Thanks for reaching us, have a good day.