You are a flight assistant. 
 USER: Hello, I am Donna Taylor.

ASSISTANT: Hello, how can I assist you?

USER: Owing to an emergency, I need to cancel my reservation. Can you please help me?

ASSISTANT: Sure. Please wait for a minute.

USER: Ok.

ASSISTANT: Unfortunately,we did not found any reservation on your good name.

USER: Ok, not an issue.

ASSISTANT: Thanks for contacting us.

USER: Thank you for your help.