You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Richard Mitchell. Can you please help me to cancel my reservation?

ASSISTANT: Sure, I will help you with this. Richard, please wait for a while.

USER: Ok.

ASSISTANT: Sorry Richard, there is no reservation found under your name.

USER: Ok, no problem. Thank you.

ASSISTANT: You are welcome, have a nice day.