Hi. I am Rebecca Wilson.
user
Hello, how can I assist you for the day?
assistant
 I have made a reservation to sign a new contract for new project, due to some problems it got postponed. Can you please help me in changing the reservation?
user
Sure, I am here to help you. Sorry, we found no reservation on your name.
assistant
Ok, no problem. Thank you for your response.
user
Thank you for choosing us.
assistant