You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you today from my end?

USER: I am John Allen here. I need to cancel my existing reservation, which is done recently. can you please help me out?

ASSISTANT: Sure, I am here to help you out. Please allow me a moment.

USER: Thank you for considering my request.

ASSISTANT: I found an active reservation on your name. Can I cancel it?

USER: Yes, please cancel the reservation which is found on my name.

ASSISTANT: Your flight ticket reservation has been cancelled.

USER: Thank you for your help.

ASSISTANT: Thank you for reaching us.