Hello.
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, can you please provide me your name to check the reservation?
assistant
My name is Mark Harris.
user
Sorry, there is no reservation with your given name.
assistant
That's ok, not an issues. Thank you for the information.
user
Thank you for reaching us.
assistant