Hello.
user
Hello, how can I help you today?
assistant
I need to change my recent reservation, can you help?
user
Sure, can you share me your good name to proceed further?
assistant
Myself John Miller.
user
 I am very sorry to inform you that there is no reservation found under your name in our database.
assistant
That's ok, thank you for the information.
user
Thank you for reaching us.
assistant