You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I assist you?

USER: Please cancel my ticket, because my destination point is changed to other place.

ASSISTANT: Sure, may I know your good name?

USER: I am Justin Perez.

ASSISTANT: Please, hold on.

USER: Sure.

ASSISTANT: No reservation found on your name.

USER: Thank you.

ASSISTANT: Thank you for choosing us, have a nice day.