You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I give assistance to you?

USER: I am Daniel Lewis. I want to cancel my reservation due to heavy rainfall at my place. Can you please help me?

ASSISTANT: Definitely, I will help you. Please wait for a few minutes.

USER: Sure.

ASSISTANT: Sorry to say that, no reservation was found on your name to cancel.

USER: Ok, thank you for informing me.

ASSISTANT: Thank you for availing us.