You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I help you today?

USER: Can you help me to cancel my reservation?

ASSISTANT: Sure,I will help you.

USER: My name is Michael Johnson.

ASSISTANT: Thank you for providing your name. Sorry, no reservation found on your name to cancel.

USER: Ok, no issues. Thank you for your time.

ASSISTANT: Welcome, have a nice day.