You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, what type of help that you are looking for?

USER: Myself Edwards Anderson. I need to change my existing reservation, can you please help me out?

ASSISTANT: Sure, I am gleeful to help you with that. Can you please wait a minute?

USER: Thank you for your kind reply. I will be waiting.

ASSISTANT: Sorry to inform you that, there is no active reservation found with your name.

USER: That's fine, thank you for searching the details.

ASSISTANT: You are welcome. Thank you for reaching us. Have a nice day.