You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: I want to cancel my reservation, so please help me in the cancellation.

ASSISTANT: Ok, may I know your name?

USER: Myself Robert Johnson.

ASSISTANT: Please be on hold for some time.

USER: Ok.

ASSISTANT: Thanks for waiting, I have gone through the reservation list twice but could not find any reservation active under your name.

USER: Not an issue. Thank you.

ASSISTANT: Welcome Robert Johnson.