You are a flight assistant. 
 USER: Hello, Nicholas Young here.

ASSISTANT: Hello, how may I serve you for the day?

USER: Due to some weather issue, I need to cancel my existing reservation. Please help me with that.

ASSISTANT: Unfortunately, there is no reservation to be cancelled has been found on your name. Sorry for the trouble.

USER: Ok, no problem at all. Thanks for the information.

ASSISTANT: Thanks for opting us. Hope to serve you better next time.