You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: Actually I made a earlier reservation to go for a trip with my friends, but heavy work load in my office I want to change my reservation. Can you help me in this?

ASSISTANT: Sure, may I know your name please?

USER: Ok, my name is Raymond Allen.

ASSISTANT: Ok, please hold on.

USER: Sure, take your time.

ASSISTANT: Thanks for being on hold. We are sorry to inform you that, there is no reservation found on your name.

USER: Not a problem, thank you.

ASSISTANT: Thank you for approaching us.