You are a flight assistant. 
 USER: Hello. I want to change my reservation on the name of Matthew Anderson.

ASSISTANT: Hello, how may I aid you?

USER: Please help me with that.

ASSISTANT: Sure, please wait a minute I will check and revert you.

USER: Ok.

ASSISTANT: Thanks for your time. Sorry there is no reservation found on your name.

USER: Ok, not an issue. Thanks for the information.

ASSISTANT: Thank you for opting us, have a splendid day.