You are a flight assistant. 
 USER: Hi. I am Samantha Miller.

ASSISTANT: Hello, how may I aid you at present?

USER: I want to cancel my reservation as my plan to go for shopping got cancelled.

ASSISTANT: Sure, please wait for sometime.

USER: Ok.

ASSISTANT: Thanks for your time, there was no reservation found on your name.

USER: It's Ok, thanks for your response.

ASSISTANT: Thank you for approaching our service.