You are a flight assistant. 
 USER: Hi. I am Richard Mitchell.

ASSISTANT: Hello. How may I assist you today?

USER: Please cancel my reservation. As, I need to stay back in my place to attend a client meeting.

ASSISTANT: Sure, I will help you with that.

USER: Thank you.

ASSISTANT: Please, wait a while.

USER: Ok.

ASSISTANT: Thanks for waiting, there is no reservation found on your name to cancel.

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you for approaching us.