You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

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

ASSISTANT: Sure, I am here to help you out. May I know your name please?

USER: My name is Sarah Carter.

ASSISTANT: Wait a moment please.

USER: Sure, take your time.

ASSISTANT: Sarah Carter, we haven't found any reservation under your name in our database.

USER: Ok, no issues. Thank you for your information.

ASSISTANT: Thank you for choosing us.