You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I assist you today?

USER: I want to cancel my reservation, due to my sudden health issues. Can you help me?

ASSISTANT: Sure, may I know your name please?

USER: Thank you, I am Anthony King.

ASSISTANT: Ok, please wait for a moment.

USER: Sure.

ASSISTANT: Sorry, there was no reservation found with your given name.

USER: That's ok, not an issue. Thanks for your kind information.

ASSISTANT: Thank you for choosing us.