You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, what can I do for you today?

USER: I am Brenda Nelson. Due to an emergency, I would like to cancel my recent reservation.

ASSISTANT: Surely, we will help you.

USER: Thank you.

ASSISTANT: Please wait for a couple of minutes to check the previous reservation on your name.

USER: Sure, take your time.

ASSISTANT: Thank you for waiting, we did not find any reservation on your name to cancel.

USER: That's ok, it might be cancel before by my friend.

ASSISTANT: Thank you for opting us.

USER: Welcome.

ASSISTANT: Have a nice day.