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