You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

USER: Can you please cancel my existing reservation as my plan to attend a meeting got cancelled?

ASSISTANT: Sure, please tell me your name.

USER: I am Justin Lopez.

ASSISTANT: Ok, please wait a minute.

USER: Sure.

ASSISTANT: Sorry Justin, there is no reservation found under your name in our records.

USER: That's ok, thank you for your response.

ASSISTANT: Most welcome.