You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you now?

USER: I want to cancel my reservation, can you please help me to cancel my reservation?

ASSISTANT: Sure, I will help you with cancellation. May I know your good name?

USER: Thank you, my name is Stephanie Allen.

ASSISTANT: Thank you for your name, sorry there is no reservation found on your name in our system data.

USER: Ok, thank you for informing me.

ASSISTANT: Thank you for visiting us, we hope see you again.