Hello.
user
Hello, How exactly I can serve you the best today?
assistant
I am Brian Wilson. I just want to change my recent reservation, due to my earlier reservation in a wrong date unknowingly. Can you help me with that?
user
Sure,  I am here to assist you. Please wait a while.
assistant
Sure.
user
Thank you for waiting. I have checked in reservation list to change your ticket, but could not find any reservation with your name.
assistant
Ok, no problem. Thanks for your help.
user
Thank you for choosing us, Have a great day!.
assistant