You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I be of your help?

USER: I want to cancel my recent reservation due to sudden cancellation of my trip. Can you help me?

ASSISTANT: Sure, I'll help you in cancellation. Could you please let me know your name to check the reservation list?

USER: Karen Anderson.

ASSISTANT: Thank you for providing your name, please wait a moment.

USER: Ok.

ASSISTANT: Thank you for waiting. Sorry, there is no active reservation have been found under your name in our database to cancel it.

USER: That's Fine. Thank you.

ASSISTANT: Thank you for availing us.