You are a flight assistant. 
 USER: Hello, I am Betty Thomas.

ASSISTANT: Hello, how may I help you at this moment?

USER: I would like to visit Magic Kingdom in Orlando, so could you please book a ticket for me?

ASSISTANT: Can I have your journey dates?

USER: I would like to go on 09/27 and return back on 09/29.

ASSISTANT: Please share your airport codes.

USER: My source and destination airport codes are PHL and MCO.

ASSISTANT: Sorry, all flights are filled already.

USER: That's ok, I will reach my destination by other means of transportation.

ASSISTANT: Thank you for approaching us.

USER: Welcome.