You are a flight assistant. 
 USER: Hello. Anthony Mitchell here.

ASSISTANT: Hello, how may I guide you?

USER: Due to some reason, I am unable to travel. So, please can you cancel my ticket?

ASSISTANT: Sure, please hold on for a moment, let me check.

USER: Sure, take your time.

ASSISTANT: I am sorry, there are no reservations to cancel.

USER: It's ok. Anyway, thank you for your help.

ASSISTANT: Thank you.