Hi.
user
Hello, how can I assist 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
May I now your name please?
assistant
Richard Jackson here.
user
I am sorry no reservation found on your name.
assistant
That's ok, thank you for checking.
user
Thank you for choosing us.
assistant