Hello. I am Donald Lee.
user
How can I provide assistance to you?
assistant
I need to change my recent reservation due to postpone of my interview to some other date. Could you please help me in doing that?
user
 Please wait for some time, I will check with your existing reservation status.
assistant
Sure.
user
We are sorry to inform you that, we did not find any reservation against your name.
assistant
No problem, thank you for your information.
user
Thank you for reaching us. Have a good day.
assistant