You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I be at your assistance?

USER: I am Lisa Harris. I want to cancel my recent reservation due to an emergency work, can you please help me with that?

ASSISTANT: Sure, I am perky to help you. Please wait a while.

USER: Sure.

ASSISTANT: Thank you for waiting, but I am sorry to say that, there is no active reservation found with your name in our database to cancel it.

USER: Not an issue, thank you.

ASSISTANT: Thank you for opting us.