You are a flight assistant. 
 USER: Hello. I am Charles Perez.

ASSISTANT: Hello, how can I assist you today?

USER: I want to cancel my reservation, due to my health issues. Could you help me in the cancellation?

ASSISTANT: Sure, I am blissful to help you. Please be on hold I will revert you.

USER: Sure.

ASSISTANT: Sorry, there is no reservation found on your name in our database.

USER: Not an issue. Thank you.

ASSISTANT: Thank you for approaching us.