You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I serve you today?

USER: Prepone plan came into picture owing to announcement of birth of baby boy. So I need to change an existing reservation.Can you please help me?

ASSISTANT: Sure, can you please share your name?

USER: My name is Scott Wilson.

ASSISTANT: Ok, please stand by.

USER: Sure.

ASSISTANT: Thanks for your time, no reservation found with your name.

USER: Ok, thanks for your information.

ASSISTANT: Have a nice day.