Hello.
user
Hello, how can I help you?
assistant
 I have an earlier reservation to sign a new contract for new project, due to some problems it got postponed, can you please help me to change my existing reservation?
user
May I know your name please?
assistant
My name is Alexander Wilson.
user
Sorry to say, there is no reservation on your name in our database.
assistant
No problem, thank you.
user
Thank you for opting us.
assistant