Hi.
user
Hello, how can I help you today?
assistant
Due to sudden change in my trip to another location, I would like to do some changes in existing my reservation. Can you please help me out?
user
Sure, I am here to help you with that, can I know your good name to proceed further?
assistant
Stephanie Carter here.
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 checking.
user
Thank you for reaching us.
assistant