You are a flight assistant. 
 USER: Hello. I am Debra Walker.

ASSISTANT: Hello, How can I abet you now?

USER: I just want to cancel my recent reservation, due to my scheduled examination dates has been cancelled. Can you please help me in booking a flight ticket?

ASSISTANT: Sure, I will help you with that. Please wait for a while.

USER: Ok.

ASSISTANT: There is no active reservation found with your name, to cancel it.

USER: Ok, no issues.

ASSISTANT: Thank you for your approach.

USER: Thank you for your valuable information.