You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you today?

USER: I am Lisa Evans. I want to cancel my recent reservation due to bad weather condition, can you please help me with that?

ASSISTANT: Please wait a moment, let me check with your details.

USER: Sure.

ASSISTANT: Sorry, there are no active reservations to cancel.

USER: No problem, thank you.

ASSISTANT: Thank you for reaching our service.