You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I guide you?

USER: Can you please help me to cancel my recent reservation?

ASSISTANT: Sure, I am here to help you. Can you please tell me your name?

USER: Dennis Moore here.

ASSISTANT: I regret to inform you that, there is no active reservation on your name in our portal to cancel the ticket.

USER: Ok, no problem. Thank you for checking.

ASSISTANT: My pleasure. Thank you for approaching us.