Hello.
user
Hello. How may I assist you today?
assistant
I want to change an existing reservation, so please help me in changing the reservation.
user
Sure, I will help you. Please let me know with your name.
assistant
Myself Andrew Perez.
user
Please allow me a minute.
assistant
Ok.
user
 Andrew Perez, I am really sorry to inform you that there is no booking found on your name.
assistant
Not an issue. Thank you.
user
Thank you for understanding. Thank you for reaching us. Have a great time.
assistant