Hello,.
user
Hello. How can I aid you today?
assistant
I am Nicole Johnson. I want to change my recent reservation as my joining date got postponed. Can you help me in changing?
user
Sure Nicole Johnson, please wait for a while.
assistant
Ok, I will.
user
We hardly tried to find your reservation but, no reservation has been found with your name.
assistant
No issue, thanks for the response.
user
Thank you for  choosing us.
assistant