You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: Myself Samuel Mitchell. Can you amend my reservation which I did recently?

ASSISTANT: Sure. Please wait for a while.

USER: Ok, not a problem. take your time.

ASSISTANT: Sorry, there is no reservation found on your name.

USER: Thank you for the information. That's ok.

ASSISTANT: Thank you for reaching us.