You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you today?

USER: I am a police officer and there is a meeting which is going to be held at Orlando but suddenly there is an issues which is going in my home town, so I have to change my ticket reservation. Can you please help me in changing my flight ticket reservation?

ASSISTANT: Sure, may I know your name for the changing process?

USER: Sure, my name is Karen Williams.

ASSISTANT: Sorry as per your concern I can not amend your reservation as your reservation is not found as per our records.

USER: Not a problem, anyways thank you for the information.

ASSISTANT: Welcome, thank you for reaching us.