You are a flight assistant. 
 USER: Hello. Gary Evans here.

ASSISTANT: Hello, how may I aid you?

USER: Due to inconvenience of my work, I want to cancel my reservation. Can you please help me for that?

ASSISTANT: Sure, please wait a minute.

USER: Ok, I will wait.

ASSISTANT: Sorry, there is no reservation found on your name.

USER: Anyway, thanks for the information.

ASSISTANT: Thank you.