You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: My name is Robert Roberts.

ASSISTANT: Ok, Robert Roberts.

USER: I want to cancel my reservation, due to some issue.

ASSISTANT: Give  ma  moment.

USER: Ok.

ASSISTANT: Sorry, no reservation found with your name.

USER: It's ok.

ASSISTANT: Thank you for choosing us. Have a good day.

USER: Thank you for checking.