Hello.
Hello. Could you please tell me how can I amend you?
Myself Christopher Thompson.
Ok.
For some issues I want to change my reservation, can you please help me?
Ok, sure I will help you with that. Can you please wait for some time.
Ok.
Sorry Thompson, no active reservation  found on your name in my database.
It's ok. Thank you for the information.
Most welcome, Have a nice day.