You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: Actually, I want to cancel my reservation which is recently done due to some health issues, can you please help me?

ASSISTANT: Sure, I will help you.

USER: Thank you.

ASSISTANT: Sorry, there is no reservation with your name to cancel.

USER: Ok, no problem.

ASSISTANT: Thank you for approaching us. Can you please tell me your name?

USER: Sure, my name is Raymond Mitchell. Thank you for your service.