You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How may I serve you today?

USER: My friend make a reservation for Orlando to spend holiday with me, now he is ill and our planed cancelled. So, I want to cancel the reservation. Can you cancel it?

ASSISTANT: Sure, may I know your name to cancel your reservation?

USER: The reservation is made on my friend name that is John Nelson.

ASSISTANT: Ok, please hold on a moment.

USER: Sure.

ASSISTANT: Thank you for waiting, no reservation was found on your friend name in our database.

USER: Thank for the details.

ASSISTANT: Thank you for choosing us.