Hello.
user
Hello. How may I help you out?
assistant
Actually, I want to change my existing reservation which is done recently due to some problems, can you please help me?
user
Sure, I will help you in changing the reservation.
assistant
Thank you.
user
Sorry, there are no reservations found in our database. May I know your name please?
assistant
Sure, my name is Melissa Lee. That's ok, thank you for your service.
user