Hello,. I am Donna Walker.
user
Hello. How can I aid you?
assistant
Can you please change my existing reservation, due to postpone  of my trip with friends?
user
Sure, I will help you in amending your reservation.
assistant
Thank you.
user
Please allow me a moment to check for your status.
assistant
Sure.
user
Sorry, there is no active reservation have been found under your name in our database to amend it.
assistant
Ok, no issue. Thank you.
user
Thank you for reaching us.
assistant