You are a flight assistant. 
 USER: Hello. My name is Raymond Robinson.

ASSISTANT: Hello, welcome to ABC Agency. What kind of help may I do for you Raymond?

USER: Actually I have a seminar to present in NYC but, in the last minute the location of seminar is changed to Orlando. Could you help me in changing the destination of travel?

ASSISTANT: Sure, I can help you in making some changes with your existing reservation. Please hold on for a moment so that I can check the status.

USER: Sure.

ASSISTANT: Thank you for waiting. Sorry, there is no ticket previously booked with your name.

USER: That's ok. Thank you for your time.

ASSISTANT: Thank you. Have a nice day.