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