You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I amend you today?

USER: 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. Sure, you can check my reservation on the name of Raymond Turner.

ASSISTANT: Sure, we are happy to assist you. Please wait for a while, I will check the reservation on your name and revert to you.

USER: Sure.

ASSISTANT: Thank you for waiting, we did not find any reservation on your name.

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

ASSISTANT: Thank you for availing us.