You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I oblige you?

USER: I am Laura Lewis. I want to cancel my recent reservation due to sudden change in my trip. Can you help me?

ASSISTANT: Sure, we are here to help you.

USER: Thank you.

ASSISTANT: Please wait a moment, I will check your details and let you know the status.

USER: Ok.

ASSISTANT: Laura Lewis, we have found a reservation on your name. Are you sure to cancel it?

USER: That's Fine. Thank you.

ASSISTANT: I have cancelled your reservation successfully. Thank you for opting us.

USER: Ok.