Hello, I am Matthew Hall.
user
Hello. How can I assist you today?
assistant
Due to sudden change in my trip dates I need to change my existing reservation. Can you help me changing my reservation?
user
Sure, may I know your name to check for the previous reservation? Please allow me a moment.
assistant
Sure.
user
Matthew, there is no reservation found under your name.
assistant
No problem, thank you for the information.
user
Thank you for reaching us, have a nice day.
assistant