You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I aid you?

USER: I am Joshua Lee. I need to cancel my reservation, can you help me out?

ASSISTANT: Sure, I will help you please wait for a while.

USER: Thank you.

ASSISTANT: Thank you for waiting.

USER: Ok.

ASSISTANT: Sorry, there is no active reservation have been found under your name in our database to cancel it.

USER: That's ok, not an issue. Thank you.

ASSISTANT: Thank you for reaching us.