You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: Myself Brandon Davis, can you help to change my recent reservation which I did week ago?

ASSISTANT: Sure, please hold on for a moment.

USER: Ok, I will wait.

ASSISTANT: Sorry, no reservation found for the given name.

USER: Ok, not a problem. Thank you for the information.

ASSISTANT: Tank you for reaching us.