Hello.
user
Hello. How can I help you?
assistant
I want to change my existing reservation, can you please help me with this?
user
Sure, I am here to help you with that, can I know your good name to proceed further?
assistant
I am David Lewis.
user
Thank you very much. Please wait for a while, let me check your reservation status in our database.
assistant
Sure.
user
I am very sorry to inform you that there is no reservation found under your name in our database.
assistant
Ok, no problem. Thank you for your information.
user
Thank you for reaching us.
assistant