You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: I am Brenda Anderson here. I need to cancel my existing reservation, as my planned trip with my friends got cancelled. Can you please help me out?

ASSISTANT: Sure, please wait for a moment.

USER: Sure, I will wait for your positive information.

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

USER: Ok, please proceed with that cancellation.

ASSISTANT: Your flight ticket has been cancelled successfully.

USER: Thank you for your help in cancelling my existing reservation.

ASSISTANT: Thank you for opting us.