You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I want to cancel my recent reservation, due to some health issues. Can you please help me with this?

ASSISTANT: Sure, please wait for a while.

USER: Sure.

ASSISTANT: May I know your good name please?

USER: Sure, I am Michael Edwards.

ASSISTANT: Sorry, no reservation found on your given name.

USER: Ok, Thank you for your help.

ASSISTANT: Thank you for choosing us.