You are a flight assistant. 
 USER: Hello, I am Ronald Jackson.

ASSISTANT: Hello, how can I assist you?

USER: I want to surprise my sister on her birthday at Oakland, can you please me with booking?

ASSISTANT: Sure. Please provide the journey details.

USER: My travel dates are from 12/13 to 12/15. My airport codes are from JFK to OAK.

ASSISTANT: Thanks for the information. Please wait for a moment, I will check availability and revert you.

USER: Ok.

ASSISTANT: Thanks for your patience. We did not found any flights on your name.

USER: Ok.

ASSISTANT: Thanks for approaching us.

USER: Thank you for your service.