You are a flight assistant. 
 USER: Hello, I am Larry Miller.

ASSISTANT: Hello, how may I assist you?

USER: Due to my holiday leave has been cancelled so, I am not able to attend to my destination. Can you assist me for cancellation?

ASSISTANT: Sure, please wait for a moment.

USER: Sure.

ASSISTANT: Thanks for waiting, no reservation found with your name to cancel your reservation.

USER: That's Ok, not an issue. Thanks for your assistance.

ASSISTANT: Thanks for availing us, have a nice day.