You are a flight assistant. 
 USER: Hello, I am Kevin Wright.

ASSISTANT: Hello, how can I help you?

USER: I want to book a flight ticket to Oakland, CA - OAK to enjoy with my friends on the occasion of Year ending. Can you help me for booking on 12/29?

ASSISTANT: Sure, when do you want to return?

USER: I have intend to return on 12/31.

ASSISTANT: Ok, please provide your origin.

USER: Sure, my origin is Orlando, FL - MCO.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: Thank you for your time, No flights were found with your given specifications.

USER: Ok, not an issues. Thanks for your help.

ASSISTANT: Thank you for contacting us.