You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you?

USER: I am Justin Gonzalez, I want cancel my ticket due to shareholder meeting has been postponed.

ASSISTANT: Ok, please be on hold.

USER: Sure.

ASSISTANT: Sorry to inform you that, there is no reservation found against your name.

USER: Thanks for the information.

ASSISTANT: Thank you for choosing us.