You are a flight assistant. 
 USER: Hello, I am Emily Nelson.

ASSISTANT: Hello, how may I help you?

USER: Due to sudden changes in weather, I want to cancel my reservation. Can you please cancel my reservation?

ASSISTANT: Sure, please wait for a minute so that I will check with current status and revert you.

USER: Ok.

ASSISTANT: Unfortunately there is no reservation found with your name.

USER: No problem. Thank you.

ASSISTANT: Thank you for availing us.