You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you?

USER: I am Jonathan Williams. Can you please cancel my reservation as meeting with my client got postponed?

ASSISTANT:  Ok, please wait I will revert you.

USER: Sure.

ASSISTANT:  We found reservation on your name and it is cancelled.

USER: Ok. Thank you.

ASSISTANT:  Thank you for availing us.