You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, how can I help you now?

USER: I want to cancel my recent reservation which is with the name Donna Green, as I am owing to an emergency.

ASSISTANT: Sure, I will help to cancel your reservation. Please wait.

USER: Ok.

ASSISTANT: Thanks for waiting, sorry to inform you there is no any reservation found on your name.

USER: Ok, no issues. Thank you for the information.

ASSISTANT: Thank you, have a nice day.