You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: Samuel Moore here, due to sudden changes my meeting has been postponed. Can you please change my existing reservation?

ASSISTANT: Sure, please wait I will get back to you.

USER: Ok.

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

USER: Ok, not a problem. Thank you for your information.

ASSISTANT: Thanks for connecting with us.