Hello.
user
Hello, how can I assist you today?
assistant
I want to change my existing reservation which is with the name Gregory Miller, can you help me with that?
user
Sure, please hold on, let me check your reservation and revert to you.
assistant
Ok.
user
Thanks for being patient, sorry, unfortunately no reservation found with provided name.
assistant
Ok, thank you for the information.
user
Thanks for your interest, have a nice day.
assistant