Hello.
user
Hello. How can I help you now?
assistant
I am William Collins. I would like to change my recent reservation because my trip dates are postponed, can you help me?
user
Sure, I am here to help you. Please, wait for a while.
assistant
Thank you. Sure, take your own time.
user
Sorry, we have not found any reservation on your name in our records.
assistant
That's ok, thank you for checking.
user
Thank you for reaching us.
assistant