You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

USER: I want to change my existing reservation, as my health is not good. Can you please help me out with it?

ASSISTANT: Sure, we are here to help you. May I know your name please?

USER: Thank you. My name is Michael Adams.

ASSISTANT: Please wait for a while.

USER: Ok, sure.

ASSISTANT: Sorry to inform you that there is no active reservation on your given name.

USER: Ok, no issues. Thanks for the information.

ASSISTANT: Thanks for reaching us, have a nice day.