You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, can I have your name please?

USER: Due to health issue I will not able to travel right now, so can you help you with cancelling my previous reservation?

ASSISTANT: Sure, I will help you.

USER: Thank you.

ASSISTANT: May I know your name for checking the details of your reservation?

USER: Sure, I am Ronald Edwards.

ASSISTANT: We have searched in our database with your name, but there is no reservation found with your name.

USER: OK fine, not an issue.

ASSISTANT: Thanks for choosing our service.

USER: Thank you for your information.