Hello. Sarah Hall here.
user
Hello, how may I support you today?
assistant
I have made a reservation earlier, due to some issues I need to change my existing reservation. Can you aid me to change it?
user
Sure, please wait for a minute.
assistant
Sure.
user
Sorry to say that, no reservation was found with your good name.
assistant
Ok, no problem. Thanks for your information.
user
Thank you for reaching us.
assistant