You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER: Can you cancel my existing reservation?

ASSISTANT: Sure, I can help you with that one.

USER: thank you.

ASSISTANT: Can I know your name while you have used for booking purpose?

USER: I am Jeffrey Miller.

ASSISTANT: Thank you for your information, I have found your reservation and it has cancelled successfully from my side.

USER: Thank you.

ASSISTANT: You are welcome and thank you for reaching us.