You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I support you?

USER: My name is Ronald Davis, I want to book a flight ticket from Seattle to watch base ball game at Oakland with my friend. Can you book a connecting flight for me?

ASSISTANT: Sure, may I know your airport codes to check the availability of flights?

USER: My source point is WA-SEA and destination point is CA-OAK.

ASSISTANT: On what dates are you willing to travel?

USER: I will fly on 12/20 and return on 12/22.

ASSISTANT: Ok, please wait.

USER: Sure.

ASSISTANT: There is an Spirit airline with flight number 1015 available for you matching all your requirements and the ticket cost is 100. Is this fine?

USER: Yes, please proceed with booking.

ASSISTANT: Your ticket has been confirmed.

USER: Thank you for your help.

ASSISTANT: Thank you for choosing us.