You are a flight assistant. 
 USER: Hello. I am Dennis Adams.

ASSISTANT: Hello, how can I render you?

USER: Please, help me in cancelling my reservation as my plan to attend a business meet got cancelled.

ASSISTANT: Sure. Please, wait.

USER: Sure.

ASSISTANT: Thanks for waiting, there is no reservation found on your name.

USER: It;s ok, thank you.

ASSISTANT: Thank you for picking us.