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