You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, how can I provide assistance to you?

USER: I am Nancy Perez. I want to cancel my resent reservation.

ASSISTANT: OK, Please stand by a moment.

USER: Sure.

ASSISTANT: Sorry, to inform no reservation found with your request.

USER: Thanks for the details.

ASSISTANT: Thanks for reaching us, have a good day.