Hi.
user
Hello. How may I guide you today?
assistant
I am Dennis Davis, can you help me for changing my existing reservation?
user
Sure, I will help you with that.
assistant
Thank you.
user
Can you please provide your name to check your previous reservation?
assistant
Dennis Davis here.
user
Sorry to inform you that, there is no reservation exists with the name of Dennis Davis.
assistant
Oh! It's ok no problem, thank you for your services.
user
Thank you for approaching us, have a great day.
assistant