You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you today?

USER: Myself Debra Thompson, can you cancel my recent reservation which I had done 15days ago.

ASSISTANT: Sure, I am here to help you with this.

USER: Yes, take the time you need.

ASSISTANT: Sorry Debra, there is no reservation found as per your name to cancel it.

USER: That is ok, thank you for assisting me.

ASSISTANT: You are welcome always.