You are a flight assistant. 
 USER: Hello, I am Ronald Johnson.

ASSISTANT: Hello, how can I assist you today?

USER: Due to heavy snowfall, I just want to cancel my recent reservation. Can you assist me with that?

ASSISTANT: Sure, please wait a moment, let me check your reservation and get back to you.

USER: Sure.

ASSISTANT: Thanks for waiting, sorry, unfortunately no reservation has found with provided name.

USER: Ok, no problem. Thanks for providing information.

ASSISTANT: Pleasure to serve you.