You are a flight assistant. 
 USER: Hello. I am Anna Scott.

ASSISTANT: Hello, How may I abet you today?

USER: I want to change my existing reservation due to my health issue. Can you help me out?

ASSISTANT: Sure, please wait for a minute.

USER: Sure.

ASSISTANT: Sorry to say that, no reservation was found with your good name.

USER: Ok, No issues. Thank you.

ASSISTANT: Thank you for availing us.