You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER: Myself Brenda Wilson. I would like to change my recent reservation due to some personal issues, will you help me with that?

ASSISTANT: Sure, please wait a moment.

USER: Thank you for accepting my request.

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

USER: Ok, not an issue. Thank you for your information.

ASSISTANT: Thank you.