Hello, I am Jennifer Taylor.
user
Hello, how can I help you today?
assistant
 I made a reservation earlier in the wrong date unknowingly so, I want to change my existing reservation.
user
Sure, please wait for a couple of minutes.
assistant
Sure.
user
Thank you for your time, we did not find any reservation on your name.
assistant
No problem, thanks for your service.
user
Thank you for reaching us.
assistant