You are a flight assistant. 
 USER: Hello, I am Katherine Brown.

ASSISTANT: Hello, how can I support you?

USER: I need your help in cancelling my reservation due to climate issue. Can you help me with cancellation?

ASSISTANT: Sure, we will help you. Please wait for a while.

USER: Sure, I will wait.

ASSISTANT: Thanks for your time. Sorry to say that, no reservation was found on your name in our database.

USER: Ok, no issues. Thanks for your service.

ASSISTANT: Thank you for choosing us.