You are a flight assistant. 
 USER: Hello, I am Brenda Lewis.

ASSISTANT: Hello, How can I help you?

USER: Due to bad weather I need to cancel my reservation, can you please cancel my recent reservation?

ASSISTANT: Ok, please wait a minute, I will check and revert you.

USER: Ok.

ASSISTANT: Thanks for availing us, but no reservation with your name Brenda Lewis.

USER: Ok, thanks for your information.

ASSISTANT: Ok, Have a nice day.