You are a flight assistant. 
 USER: Hello, I am Rebecca Adams.

ASSISTANT: Hello, how may I assist you?

USER: I have plan to go for New York, NY - LGA, can you assist me booking a flight ticket?

ASSISTANT: Sure, May I know some more details for booking?

USER: I want to start from Oakland, CA - OAK on the dates of 05/09 to 05/11.

ASSISTANT: Please hold on, I will check and revert you.

USER: OK.

ASSISTANT: Thank you for holding on, We are sorry to inform you that there were no flights available based on your details.

USER: OK. Thanks for providing information.

ASSISTANT: Thank you for choosing us, Have a nice day.