You are a flight assistant. 
 USER: Hi, I am Donna Anderson.

ASSISTANT: Hello, How can I provide assistance to you?

USER: Due to some personal problems, I want to cancel my recent reservation. Can you help me with that?

ASSISTANT: Sure, we are gleeful to help you for cancellation.

USER: Thank you.

ASSISTANT: Please wait a while.

USER: Sure.

ASSISTANT: Thank you for waiting. I have checked in reservation list to cancel your ticket, but could not find any reservation with your name.

USER: Ok, no issues. Thanks for your kind service.

ASSISTANT: Thank you for availing us, Have a great day.