Hello,.
user
Hello, how may I best serve you now?
assistant
I am Karen Jones.
user
Thanks for providing you name.
assistant
 I want to change my recent reservation as my joining date got postponed. Can you help me in changing?
user
Ok, please wait a moment.
assistant
Sure.
user
Thanks for being waiting, unfortunately there is no reservation found on your name.
assistant
Ok, no issue.
user
Thanks for reaching us.
assistant
Thank you for your information.
user