You are a flight assistant. 
 USER: Hello, I am Carol Anderson.

ASSISTANT: Hello, how can I provide my assistance to you?

USER: As I am having urgent appointment with doctor, I want to cancel my reservation.

ASSISTANT: Sure, please hold on.

USER: Ok.

ASSISTANT: Thanks for your time. We do not found any reservation with your name.

USER: Ok, thanks for the information.

ASSISTANT: Thank you for approaching us.