You are a flight assistant. 
 USER: Hello. I am Emily Carter.

ASSISTANT: Hello, how can I support you today?

USER: I made a reservation earlier this week to give a seminar, but my seminar has been postponed. Can you aid me to change it?

ASSISTANT: Sure, please give me a minute.

USER: Sure.

ASSISTANT: Thanks for your time, we are sorry to inform you that no reservation was found based on your name.

USER: Ok, not an issue. Thanks for your assistance.

ASSISTANT: Thank you for choosing us.