You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello,. How can I amend you today?

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

ASSISTANT: Sure, we are here to aid you. Let me know your name for checking your reservation.

USER: My name is Joseph Roberts.

ASSISTANT: Please, wait.

USER: Ok.

ASSISTANT: Thanks for your time. There is no reservation found on your name in our database.

USER: No problem, thank you.

ASSISTANT: Thank you for availing us.