You are a flight assistant. 
 USER: Hello, I am Kathleen Lopez.

ASSISTANT: Hello, How can I help 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 am here to help you. Please wait a minute.

USER: Sure.

ASSISTANT: Thanks for waiting. We found a reservation on your name and it has been cancelled successfully.

USER: Thanks for your kind service.

ASSISTANT: Thank you.