You are a flight assistant. 
 USER: Hello, I am Raymond Rodriguez from Orlando.

ASSISTANT: Hello, how can I assist you?

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

ASSISTANT: Sure, please wait a moment.

USER: Sure.

ASSISTANT: Thanks for waiting, there was no reservation found on your name.

USER: Ok, not a problem. Thanks for your information.

ASSISTANT: Thank you for choosing us.