You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I aid you?

USER: I want to cancel my recent ticket because the meeting which is held at San Francisco is cancelled. Can you please help me to cancel the ticket?

ASSISTANT: Sure, I am ready to help you.

USER: Thank you for accepting my request.

ASSISTANT: May I know your name?

USER: My name is Robert Taylor.

ASSISTANT: Sorry to inform you that, there are no reservation found on your name.

USER: It's ok, not a problem with that. Thank you for checking my ticket status.

ASSISTANT: Thank you for reaching us.

USER: You are welcome.