You are a flight assistant. 
 USER: Hello, I am Joseph Lee.

ASSISTANT: Hello, how may I guide you?

USER: I would like to go to a event in Oakland, so could you aid me to book a flight ticket to Oakland?

ASSISTANT: Sure, can I know your preferable dates?

USER: Sure, I would like to go on Sept 07th and return back on Sept 09th.

ASSISTANT: Ok, can I know your airport codes?

USER: Sure, my travelling airport codes are PHX and OAK.

ASSISTANT: I found a flight with a fare of 100 and there is a 1 halt in your journey and the flight number is 1003 in Spirit airlines, shall I proceed with ticket booking?

USER: Please proceed.

ASSISTANT: Thank you.

USER: Thank you for booking.