You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I serve you?

USER: Help to find a flight from Oakland to visit my cousin on her birthday.

ASSISTANT: Sure, Do you have any connection limit?

USER: I need a flight with one connection.

ASSISTANT: May I know the travelling dates?

USER: I will travel on 01/16 and return on 01/18.

ASSISTANT: Please share your airport codes.

USER: I like to fly from Oakland, CA-OAK to airport PA-PHL.

ASSISTANT: May I know your name?

USER: Karen Campbell.

ASSISTANT: We found a AA airline, flight number:1024 and the price is 200.

USER: It is perfect for me, please proceed with booking.

ASSISTANT: Your flight ticket has been confirmed.

USER: Thank you for helping me.

ASSISTANT: Thank you for choosing us.