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

ASSISTANT: Hello, we glad to have you here, how may I help you?

USER: Can you please help in booking a flight as want to visit all places of OAK?

ASSISTANT: Sure, can you share your depart date and return date?

USER: My travelling dates are from 11/16 to 11/18.

ASSISTANT: Ok, may I know your source point?

USER: My origin point is JFK.

ASSISTANT: Ok, please give me a minute.

USER: Sure.

ASSISTANT: Thank you for giving your valuable time. Sorry, to say there are no flights.

USER: It's ok, thanks for the information.

ASSISTANT: Thank you for picking our agency.