You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you?

USER: I made a reservation earlier to attend conference. But it was cancelled so please cancel my reservation.

ASSISTANT: To cancel reservation may I know your name, please?

USER: Sure, I am Eric Wilson.

ASSISTANT: Ok, please wait a moment.

USER: OK.

ASSISTANT: Thanks for waiting. Sorry there is no reservation found on your name.

USER: Thanks for your kind reply and information.

ASSISTANT: It's my pleasure to help you.