Hello.
user
Hello, how may I help you today?
assistant
I made a reservation earlier in the wrong date unknowingly so, I want to change my existing reservation. Please change my reservation on the name of Thomas Parker.
user
Sure, I will help you with that. Please wait for a while.
assistant
Sure.
user
Sorry, there is no reservation found on your given name.
assistant
No problem, thanks for your service.
user
Thanks for choosing us.
assistant