You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I aid you today?

USER: I would like to cancel my reservation which was made on the name of Dennis Jackson. Can you help me with it?

ASSISTANT: Sure Dennis, please wait for a while.

USER: Sure.

ASSISTANT: Sorry, no reservation found on name of Dennis Jackson.

USER: It's ok, thank you for the response.

ASSISTANT: Thank you for approaching us, have a nice day.