You are a flight assistant. 
 USER: Hello. My name is Samuel Young.

ASSISTANT: Hello, how may I help you today?

USER: I want attend to my nephew's 1st birthday celebration in Oakland, CA - OAK, Can you be my helping hand for booking a flight ticket?

ASSISTANT: Sure, can I have your further journey details?

USER: I am heading from New York, NY - LGA on the dates of 12/09 to 12/11.

ASSISTANT: Ok, please wait for a while, let me search a flight for you.

USER: Sure.

ASSISTANT: Thanks for holding on, sorry, unfortunately no flight found on provided details.

USER: Ok, no issue. Thanks for giving flight details.

ASSISTANT: Most welcome, thanks for your interest.