Hi.
user
Hello, how can I help you?
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. May I know your name to check with existing reservation?
assistant
James Martin here.
user
I am sorry to say 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 choosing us.
assistant