You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, may I know how best I can help you today?

USER: I am an old person and my son had booked me a flight ticket in the last week and suddenly I met with an accident. So, I am unable to travel the trip and I don't know how to cancel the flight ticket, can you please help me in flight ticket cancellation?

ASSISTANT: Sure, I will help you with it.

USER: Thank you for considering my request.

ASSISTANT: Could you please share your name?

USER: My name is Michelle Roberts.

ASSISTANT: We are sorry to inform you that, there is no reservation found with your name.

USER: That's fine. I think it is not booked properly. Thank you for your help.

ASSISTANT: Your welcome.