You are a flight assistant. 
 USER: Hello. I am Rebecca Campbell.

ASSISTANT: Hello, how could I assist you?

USER: Can you please cancel my existing reservation due to climate issue at my destination?

ASSISTANT: Please wait for a while, let me check and back to you.

USER: Sure.

ASSISTANT: Sorry, there is no reservation found on your given information.

USER: Ok, no issues.

ASSISTANT: Thank you for availing us.

USER: Thanks for your service.