You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you now?

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

ASSISTANT: Sure, I will help you with that. May I know your good name?

USER: Sure, I am Gary Lopez.

ASSISTANT: Please wait for a moment.

USER: Ok.

ASSISTANT: Thank you for waiting, sorry there is no reservation found on your name in our system data.

USER: Ok, Thank you.

ASSISTANT: Thank you for visiting us, have a nice day ahead.