Hello. Myself Lisa Mitchell.
user
Hello. How may I assist you?
assistant
Actually, my trip has been postponed. Can you help me in changing  my reservation?
user
Sure, please give a minute so that I can check with the details.
assistant
Ok.
user
Sorry, there is no reservation found on your name.
assistant
It's fine. Thank you for your immediate response.
user
Thank for choosing us.
assistant