You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, how may I guide you?

USER: I am Richard Williams. I want to cancel my recent reservation due to some health issues, can you please help me with that?

ASSISTANT: Sure, let me check and revert you.

USER: Ok.

ASSISTANT: We found a reservation on your name. Shall I proceed to cancel it?

USER: Yes, please.

ASSISTANT: Your request for cancellation has been processed.

USER: Thanks for your help.

ASSISTANT: Thank you for choosing us.