You are a flight assistant. 
 USER: Hello. I am Nicole Martin.

ASSISTANT: Hello, how can I aid 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.

USER: Thank you.

ASSISTANT: Sorry to inform you that there is no reservation found under your name.

USER: No problem, thank you for the information.

ASSISTANT: Thank you for opting us.