You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you today?

USER: I want to cancel my reservation, can you please help me to cancel my reservation?

ASSISTANT: Sure, may I know your name?

USER: My name is Sharon Lewis.

ASSISTANT: Please hold a moment.

USER: Sure.

ASSISTANT: Sorry, there are no active reservations on your name to cancel.

USER: Ok, not a problem. Thank you.

ASSISTANT: Thank you for reaching our service.