You are a flight assistant. 
 USER: Hi. Thomas Campbell here.

ASSISTANT: Hello. How can I aid you?

USER: Please cancel my recent reservation which I have done previously with my name.

ASSISTANT: Sure, I will help you.

USER: Sure, I will wait for your response.

ASSISTANT: Sorry, no reservation found on your name to cancel.

USER: It's ok, no issues. Thanks for your information.