You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you today?

USER: My name is James Thomas. I already have an reservation to attend at my meeting, due to some problems meeting place has been changed. So I need a few changes in my reservation. Can you help me to change it?

ASSISTANT: Sure, I will help you. Please wait for a minute.

USER: Sure.

ASSISTANT: There is no reservation found on your given name.

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

ASSISTANT: Thank you for opting our agency.