You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I serve you today?

USER: I want to cancel my previously done reservation as I am sick and can not go on the trip. Can you help me?

ASSISTANT: Sure, I am here to help you.

USER: Thank you.

ASSISTANT: May I know your good name?

USER: My name is Michael Mitchell.

ASSISTANT: Please, wait.

USER: Sure.

ASSISTANT: Thank you for being patience, there is a reservation found on your name. Shall I cancel it?

USER: Please cancel it.

ASSISTANT: Your reservation has been cancelled.

USER: Thank you for your prompt service.

ASSISTANT: Thank you for reaching us.