You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: The event which I am going to attend has been cancelled. Please help me in cancelling my reservation.

ASSISTANT: Sure, may I know your name please to check the reservation status?

USER: My name is Thomas Jackson.

ASSISTANT: I found your existing reservation with our database. Would you like me to cancel it?

USER: Sure, please cancel my reservation.

ASSISTANT: Your reservation has been cancelled successfully.

USER: Thank you for your help.

ASSISTANT: Thank you for choosing us.