You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

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

ASSISTANT: Sure, I will help you.

USER: Thank you for accepting my request.

ASSISTANT: Please wait a moment.

USER: Ok, I will wait for your response.

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

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

ASSISTANT: Thank you.