You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you today?

USER: I have made a reservation earlier to attend for a meeting, due to some issues it has been postponed. Can you please aid me to change it?

ASSISTANT: Sure, may I know your good name?

USER: Brian Hill is my name.

ASSISTANT: Please wait for a while.

USER: Sure.

ASSISTANT: Sorry there was no reservation found on your name to change it.

USER: Thanks for your information.

ASSISTANT: Thank you for reaching us.