You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I serve you today?

USER: I want to cancel my recent reservation as my plan at meet my friend has been postponed. Can you help me with that?

ASSISTANT: Sure, I will help you with cancellation.

USER: Thank you.

ASSISTANT: May I know your good name?

USER: Donald Nelson here.

ASSISTANT: Please wait for a moment.

USER: Sure.

ASSISTANT: Thank you for waiting, I found your reservation in our system data. Shall I cancel your reservation?

USER: Please cancel it.

ASSISTANT: Your reservation has been cancelled.

USER: Thank you for helping me.

ASSISTANT: Thank you for reaching us, have a nice day ahead.