You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I serve you today?

USER: I am Ronald Williams. Due to some health problem, I need to cancel my reservation. Can you please help me?

ASSISTANT: Sure, I am here to help you.

USER: Thank you.

ASSISTANT: Please be on hold.

USER: Sure.

ASSISTANT: Thanks for your precious time. Sorry, there is no reservation found on your given name.

USER: No problem. Thank you.

ASSISTANT: Thank you for availing us.