You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you today?

USER: Due to cancellation of my appointment, I need to cancel my flight ticket. Can you please cancel reservation with name John Mitchell?

ASSISTANT: Sure, let me check with your recent status.

USER: Sure.

ASSISTANT: We found a reservation on your name. Can I proceed with cancellation?

USER: Yes, please.

ASSISTANT: Your recent reservation has been cancelled successfully.

USER: Thanks for your kind help.

ASSISTANT: Thank you for choosing us.