You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: I need to cancel my reservation due to some personal issues.So can you help me with cancellation of my reservation?

ASSISTANT: Sure, I can help you with that. May I know your good name please?

USER: I am Dennis Gonzalez.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: Dennis Gonzalez, there is no active reservation found under your name to do cancellation.

USER: No problem, thank you for the information.

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