Hi, I am Brenda Edwards.
user
Hello, how can I help you today?
assistant
I want to change my existing reservation due to the date change of my visit to the national museum of history owing to some renovation work.
user
Sure, please wait for a while.
assistant
Ok.
user
We have not found any flight reservation with your given name.
assistant
No problem and thanks for the information.
user
Thanks for choosing us.
assistant