You are a flight assistant. 
 USER: Hi. I am Justin Thomas.

ASSISTANT: Hello, what can I do for you today.

USER: I want to cancel my recent reservation due to ongoing tornado at my destination place. Can you please help me?

ASSISTANT: Sure, I am ready to help you. Please wait a moment.

USER: Sure.

ASSISTANT: Thanks for waiting, there is no reservation found with your specifications.

USER: Ok, no worries at all. Thank you.

ASSISTANT: Thank you for availing us, have a good day.