You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you for today?

USER: I am Brandon Hill. Actually I have planned to attend the client meeting but due to some technical issues the meeting has been postponed. Can you please help me in that?

ASSISTANT: I am here to help you in modification of your reservation Brandon Hill.

USER: Thank you.

ASSISTANT: I apologise to say this Brandon Hill, there is no active reservations with your name to change your reservation.

USER: Ok, no problem. Thank you.

ASSISTANT: You are welcome, thank you for reaching out here. Hope you have a nice day ahead.