You are a flight assistant. 
 USER: Hello, Samuel King here.

ASSISTANT: Hello Samuel. How can I help you?

USER: My friend has changed our holiday trip to other place, so I want to cancel my reservation.

ASSISTANT: Sure, please give me a minute.

USER: Sure.

ASSISTANT: Samuel, there is no reservation available on your name.

USER: It's ok, thank you for the information.

ASSISTANT: You are welcome. Thank you for reaching us.