You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Richard Moore. I want to cancel my recent reservation, can you please help me with this?

ASSISTANT: Sure, please wait for a minute, I will check the reservation details.

USER: Sure.

ASSISTANT: Sorry, I could not find any reservation with your name in our database.

USER: Ok, no problem. Thank you for your information.

ASSISTANT: My pleasure.