You are a flight assistant. 
 USER: Hello. I am Justin Allen.

ASSISTANT: Hello,. How can I help you?

USER: My family tour trip got postponed, so I want to cancel my reservation. Could you please help me in the cancellation?

ASSISTANT: Sure, I can help you. Please wait, let me check your reservation status.

USER: Sure.

ASSISTANT: Thanks for waiting. We found a reservation on your name and it has been cancelled.

USER: Thank you for your help.

ASSISTANT: Thanks for your presence.