You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you for the day?

USER: I need you to cancel my flight ticket. Please help me.

ASSISTANT: Sure, I am here to help you with that reservation cancel. May I know your name please?

USER: My name is William Collins.

ASSISTANT: Please wait for a while, let me check your previous reservation status.

USER: Sure, I will wait.

ASSISTANT: Thank you for waiting.

USER: You are welcome.

ASSISTANT: There is no active reservation found with your name in our reservation list to cancel it.

USER: That's ok. Thank you.

ASSISTANT: Thank you for reaching us.