You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I best assist you?

USER: I am Ryan Roberts. Prepone plan came into picture owing to announcement of birth of baby boy. So, I want to cancel my reservation.

ASSISTANT: Ok, please wait a moment, I will check and revert you.

USER: Sure.

ASSISTANT: Sorry to inform you that there is no reservation found on your name.

USER: Ok, thanks for response.

ASSISTANT: Thanks for choosing us.