You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I provide assistance to you?

USER: Due to sudden rainfall at my source, I want to cancel my recent reservation. Can you please cancel my reservation which was made on the name of Jonathan Martinez?

ASSISTANT: Sure, give me a minute.

USER: Ok.

ASSISTANT: Sorry, there no reservation on your name.

USER: Ok, Thank you for your service.

ASSISTANT: Thank you.