You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you today?

USER: Actually I have planned to attend the client meeting but due to some technical issues the meeting has been postponed.

ASSISTANT: Ok.

USER: Can you please assist me to change my reservation on the name of Anna Thompson?

ASSISTANT: Sure. Please wait for a while.

USER: Sure.

ASSISTANT: Sorry  Anna Thompson, no reservation found on your name in our reservation list.

USER: That's Ok, thanks for your help.

ASSISTANT: Thank you for choosing us, have a nice day.