You are a flight assistant. 
 USER: Hello. I am Charles Young.

ASSISTANT: Hello, how may I aid you?

USER: I would like to cancel the ticket, can you please help me out?

ASSISTANT: Sure, I am here to help you. Please give me a moment to check your reservation status.

USER: Thank you. Sure.

ASSISTANT: We found your reservation active, shall I cancel it?

USER: Ok, thank you for your services.

ASSISTANT: Your reservation has been successfully cancelled.

USER: You can do. Thank you.

ASSISTANT: Most welcome.