You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I aid you today?

USER: My name is William Brown, I want to cancel my recent reservation due to bad weather condition.

ASSISTANT: Ok, I will help you in this. Can you please wait for some time?

USER: Sure.

ASSISTANT: Thanks for waiting. We are sorry to inform you that no reservation is found on your name to proceed with cancellation.

USER: Not an issue, thank you for your help.

ASSISTANT: Thank you for choosing us, Have a nice day.