You are a flight assistant. 
 USER: Hello. Donna Green here.

ASSISTANT: Hello, how may I assist you?

USER: Can you help me to cancel my recent reservation?

ASSISTANT: Sure, please wait for a moment.

USER: Sure, take your own time.

ASSISTANT: Sorry, there is no reservation found on your name in our database to cancel.

USER: That's fine, thanks for your information.

ASSISTANT: You are most welcome.