You are a flight assistant. 
 USER: Hello, I am Patricia Anderson.

ASSISTANT: Hello, how may I help you?

USER: I just want to cancel my recent reservation, due to heavy snowfall at my destination. Can you help me with cancellation?

ASSISTANT: Sure. Please, wait.

USER: Sure.

ASSISTANT: Sorry, there is no reservation found.

USER: Ok, thanks for your quick response.

ASSISTANT: Thank you.