You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I be your helping hand?

USER: Please change my recent reservation due to my health issue.

ASSISTANT: Sure. May I know your name to check reservation?

USER: My name is Nancy Roberts.

ASSISTANT: Please, wait for a while.

USER: Sure.

ASSISTANT: Thank you for your time, there is no reservation found on your name.

USER: Ok, No issues. Thank you.

ASSISTANT: Thank you for approaching us.