You are a flight assistant. 
 USER: Hello, Carol Smith here.

ASSISTANT: Hello, how may I guide you?

USER: The interview which I am planning to attend has been cancelled. Can you please cancel my reservation?

ASSISTANT: Sure, I will help you. Please wait a moment.

USER: Sure, take your time.

ASSISTANT: Carol, your reservation has been cancelled successfully.

USER: Thank you for your service.

ASSISTANT: Thank you for approaching us.