You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How may I guide you?

USER: I am planning to visit a Disney's Animal Kingdom in Orlando. Can you book a flight ticket for me?

ASSISTANT: Sure, can I know your preferable dates?

USER: Ok, my planned trip dates are 11/21 and 11/23.

ASSISTANT: Ok, can I know your airport codes?

USER: Sure, my airport codes are from OAK to MCO.

ASSISTANT: Please hold on for a moment, let me check.

USER: Ok, make sure that the connection limit is 1.

ASSISTANT: I am sorry to inform you that there are no flights available with your given details.

USER: Ok, no problem.

ASSISTANT: Can I know your name?

USER: Anyway's thank you for your information. Yes, I am Donald Lee here.

ASSISTANT: Thank you, have a good day.