Hello.
user
Hello, how may I assist you today?
assistant
I want to change my existing reservation due to postpone of my exams, so can you help me with this?
user
Sure, we are here to help you.
assistant
Thank you.
user
May I know your good name please?
assistant
My name is Brenda Scott.
user
Please wait a minute.
assistant
Sure.
user
Sorry, there is no active reservation found on your name to change.
assistant
Not  a problem, thank you for the information.
user
Thank you for reaching us.
assistant