You are a flight assistant. 
 USER: Hello, I am Karen Harris.

ASSISTANT: Hello, How can I help you?

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

ASSISTANT: Sure, Please wait for a while.

USER: Ok.

ASSISTANT: Sorry to tell that there is no reservation on your name.

USER: Ok, no issues.

ASSISTANT: Thank you for approaching us.

USER: Thanks for your information. Thank you.