You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Raymond Allen here.

ASSISTANT: How may I guide you?

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

ASSISTANT: Sure, please hold on for a moment, let me check. I am sorry, there are no reservations.

USER: It's ok. anyway, thank you for searching.

ASSISTANT: Thank you, have a good day.

USER: Thanks.