Hello.
user
Hello, how may I help you today?
assistant
Charles Johnson here. Due to inconvenience of my work, I want to change my reservation. Can you please help me for that?
user
Sure, I am here to help you.
assistant
Thanks.
user
Sorry Charles, there is no reservation found under your name to change your reservation.
assistant
Anyway, thanks for the information.
user
You are welcome always.
assistant