You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. What service do you need from us?

USER: I am Donna Thompson, I want to cancel my reservation as my schedule got cancelled.

ASSISTANT: Sure, I can help you with that.

USER: Thank you.

ASSISTANT: Please give me a minute.

USER: Ok.

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

USER: It's ok, anyway thank you for the information.

ASSISTANT: You are welcome, Thank you for reaching us.