You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

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

ASSISTANT: Sure, I am here to help you. May I know your name?

USER: My name is Karen Edwards.

ASSISTANT: There is no reservation found under your name to cancel.

USER: No problem, thank you.

ASSISTANT: Thank you for opting us.