You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

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

ASSISTANT: Ok, I will help you with that.

USER: Thank you.

ASSISTANT: Can I know your name please?

USER: Sure, I am Samuel Nelson.

ASSISTANT: Samuel, there is no active reservation found with your name in our records.

USER: Ok, Thank you.

ASSISTANT: Most welcome.