You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: I am Timothy Parker. Can you please change my reservation as the baby shower program which I want to attend got postponed?

ASSISTANT: Sure, wait a minute.

USER: Sure.

ASSISTANT: Sorry, we could not find any reservation on your name.

USER: Ok, thanks for your service.

ASSISTANT: Thank you for reaching us.