You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I serve you?

USER: My name is Frank Phillips, I want to book a flight from Oakland on 05/21 to watch base ball game. Can you book a connecting flight for me?

ASSISTANT: Sure. When would you like to return?

USER: I will return on 05/23.

ASSISTANT: Please share me your airport codes.

USER: My source point is CA-OAK and my destination is TX-IAH.

ASSISTANT: We found a direct flight at this moment. Is this okay for you?

USER: It is good, please proceed with booking.

ASSISTANT: Your flight ticket has been reserved with Spirit airline and the flight number:1014.

USER: Thank you for helping me.

ASSISTANT: Thank you for choosing us.