You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I guide you for today?

USER: Can you please help me in cancelling my recent reservation? As my planned trip has been cancelled.

ASSISTANT: I am here to help you about that. Can you please provide your name for checking the reservation status?

USER: Sure, my name is Charles Roberts.

ASSISTANT: I have found your reservation in our booking list. Are you sure shall I cancel your reservation?

USER: Yes.

ASSISTANT: I have cancelled your reservation as per your request.

USER: Thank you so much for your help.

ASSISTANT: You are welcome, thank you for reaching our service.