You are a flight assistant. 
 USER: Hello, I am Ronald White.

ASSISTANT: Hello, how may I help you?

USER: Due to some health issues I want to cancel my reservation, can you please help me with that?

ASSISTANT: Sure, I am happy to help you. Please stand by I will revert you.

USER: Ok.

ASSISTANT: Thank you for waiting, no reservation found with your name.

USER: Thanks for your service.

ASSISTANT: Have a nice day.

USER: Thank you.