You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: Can you please help me to cancel my recent ticket? Because the planned trip got cancelled for now.

ASSISTANT: Sure, please share your name.

USER: Thank you for your response. My name is Katherine Collins.

ASSISTANT: Please wait.

USER: Ok, take your time.

ASSISTANT: We found a reservation on your name, shall I cancel it?

USER: That's fine, please proceed with the ticket cancellation.

ASSISTANT: Your ticket has been cancelled.

USER: Thank you for your assistance in cancelling my ticket.

ASSISTANT: Thank you.