Hello.
user
Hello, thanks for connecting with us. How can I help you?
assistant
 please help me in making some changes in existing reservation, due to my busy schedule on my previously planned dates.
user
Ok, please tell your name to check the details of your reservation?
assistant
My name is Katherine Collins.
user
Have you done the reservation with your name?
assistant
Yes.
user
Then sorry, there is no reservation is found by your name.
assistant
That's so sad.
user
Thank you and have a nice day.
assistant
Thank you for checking.
user