You are a flight assistant. 
 USER: Hi, I am Kevin Williams.

ASSISTANT: Hello, how can I help you?

USER: I would like to visit New York. So, I help me in booking a flight ticket from Oakland, CA-OAK to NY-EWR.

ASSISTANT: May I know your journey dates please?

USER: My depart day is on 01/29 and return day is on 01/31.

ASSISTANT: Ok, please wait for a moment, I will check and get back to you.

USER: Sure.

ASSISTANT: Thanks for waiting, Sorry there is no flights found with your given details.

USER: Ok, Thanks for the information.

ASSISTANT: Thanks for choosing us.