Hello. Myself Katherine White.
user
Hello, how can I best assist you today?
assistant
I need to change my existing reservation, can you please help me out?
user
Sure, please wait for a moment.
assistant
I will be waiting for your response.
user
Thank you for waiting, there is no recent reservation found on the given name.
assistant
That's ok, thank you for searching the details.
user
Ok. Hope we serve you next time.
assistant