You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I am Frank Roberts, I want to cancel my reservation which I have done last week. Can you please help me to cancel my reservation?

ASSISTANT: Sure, I will help you to cancel your reservation. Give me a moment.

USER: Ok, fine.

ASSISTANT: Sorry, there is no reservation found on your name to cancel.

USER: Not an issue, anyway thank you for the information.

ASSISTANT: Welcome.