Hi, I am Melissa Campbell.
user
Hello, how can I help you today?
assistant
I would like to change my reservation as my sister's engagement got postponed. Can you help me with it?
user
Sure, please wait a moment I will check and get back to you. Sorry to inform, no reservation found with your name.
assistant
Ok, thanks for your information.
user
Thanks for reaching us, have a good day.
assistant