Hi, I am Mary Evans.
user
Hello, how may I benefit you?
assistant
Due to sudden changes in the dates of summit which was going to be held in the place where I suppose to visit, I want to do some changes in my existing reservation. Please help me with it.
user
Sure, let me check the data base and get back to you.
assistant
Ok.
user
It's unfortunate that there is no reservation found by the name you mentioned above.
assistant
Fine, thanks for the information.
user
Thank you for approaching us.
assistant