Hello.
user
Hello. How can I help you today?
assistant
Actually I made a earlier reservation to go for a trip with my friends, but heavy work load in office I want to change my reservation. Can you help me?
user
Sure, please mention your name to check the previous reservation.
assistant
Angela Adams here.
user
Sorry Adams, I did not find any  reservation under your name.
assistant
No issue, Thanks for the information.
user
My pleasure.
assistant