You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Larry Harris.

ASSISTANT: How can I serve you today?

USER: I want to cancel my reservation due to sudden change in weather at my destination place.

ASSISTANT: Ok. Please, wait.

USER: Sure.

ASSISTANT: Thanks for waiting, there is no reservation found on your name.

USER: Ok, thank you for your information.

ASSISTANT: Thank you for availing us.