You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: Could you please help me to cancel my reservation?

ASSISTANT: Sure, I am here to help you.

USER: Thank you.

ASSISTANT: May I know your name for checking your previous reservation?

USER: My name is Thomas Jackson.

ASSISTANT: Please wait a second.

USER: Sure.

ASSISTANT: There is no reservation found under your name to cancel.

USER: Ok, not a problem. Thank you for informing me.

ASSISTANT: Thank you for opting us.