You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: Due to bad weather at my source, I want to cancel my recent reservation. Can you please help me for cancellation?

ASSISTANT: Sure, may I know your name?

USER: Sure, I am Thomas Green.

ASSISTANT: Wait a minute.

USER: Sure.

ASSISTANT: There was no reservation on your given name.

USER: Ok, Thank you for your service.

ASSISTANT: Thank you for availing us.