You are a flight assistant. 
 USER: Hi,. I am Brain Perez.

ASSISTANT: Hello, how may I aid you today?

USER: To Oakland, OAK reserve me a plane to attend convocation of my sister.

ASSISTANT: Sure, could you please provide your take off airport code?

USER: My takeoff airport is Austin, AUS.

ASSISTANT: May I know your planned travel dates?

USER: I will start to Oakland on 02/17. I will return from Oakland on 02/19.

ASSISTANT: Ok, please wait for a moment.

USER: Sure.

ASSISTANT: Thank you for waiting, we found a connecting flight in Spirit airline has fare 100. Shall I proceed for booking?

USER: Ok, Proceed with my booking. Thank you.

ASSISTANT: Your booking has been confirmed with flight number 1016.

USER: Thank you for kind help.

ASSISTANT: Thank you.