You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I best support you?

USER: Due to some technical issues, my meeting place has been changed. So, please change my existing reservation.

ASSISTANT: Sure, I can change your reservation right now. Before that I need to know your good name please?

USER: Sure, I am Kenneth Mitchell.

ASSISTANT: Ok, please wait for couple of minutes.

USER: Sure, I will wait.

ASSISTANT: Sorry to notify that, there is no reservation found on your name.

USER: Ok, Thank you for providing information.

ASSISTANT: Thanks for consulting us, wish you a happy day.