Hello.
user
Hello. How may I assist you at this moment?
assistant
I would like to spend some more days with my family, please help me in changing my existing reservation.
user
Sure, I am here to assist you in changing the ticket  details. Can you please tell me your name?
assistant
Sure, my name is Donna Miller.
user
Ok, please give me a moment.
assistant
Sure, take your time.
user
I have checked in our site but I cannot find any ticket on your name to your help you out in ticket modification.
assistant
Ok, no problem. Thank you for your information.
user
You are most welcome and thank you for reaching us.
assistant