You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: Samuel Roberts here. Our get to gather got postponed. So please change my reservation.

ASSISTANT: Sure, please wait for a moment.

USER: Sure, take your time.

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

USER: No issue, thank you for the information and time.

ASSISTANT: Thank you for choosing us.