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

ASSISTANT: Hello, how may I help you today?

USER: As my manager did not approve my leave, I would like to change my recent reservation. Can you aid me with this?

ASSISTANT: Sure Scott, I am here to help you.

USER: Thank you.

ASSISTANT: Sorry Scott, there is no reservation found as per your name to cancel it.

USER: That's ok, thank you for checking.

ASSISTANT: You are welcome.