Hello,.
Hello, may I know your name?
I am Lisa Rodriguez.
Lisa, how may I assist you today?
I want to change my existing reservation as my joining date got rescheduled. please help me out.
Ok, we will surely help you. Let me check your details in our database.
Ok.
Sorry to notify you that there is no active reservation under your name to modify.
That's fine, thank you for the information.
Thank you for reaching our service.