You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I aid you?

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

ASSISTANT: Sure, please help me with your name to proceed.

USER: My name is Timothy Nelson.

ASSISTANT: Sorry, no reservation found on your name.

USER: No problem, thank you for checking.

ASSISTANT: Thank you for choosing us, have a nice day.