You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How can I help you?

USER: I want to  cancel my reservation.

ASSISTANT: Sure, Can you please provide name?

USER: I am Michelle Nelson.

ASSISTANT: OK, Please wait a moment I will revert back to you.

USER: OK.

ASSISTANT: Sorry, We did not found any reservation with your name.

USER: Thank you.

ASSISTANT: Thank you, Have a nice day.