Hello.
user
Hello. How can I aid you?
assistant
I just want to change an existing reservation as my meeting got post pone due to some technical issues. Can you help me?
user
Sure, We are here to assist you.
assistant
Thank you.
user
May I know your name?
assistant
I am Pamela Edwards.
user
Give me a minute.
assistant
Sure.
user
Thank you for waiting, but I am sorry to say that, there is no active reservation found with your name in our database to change it.
assistant
Ok, not an issue. Thank you for your information.
user
Thank you for reaching  us.
assistant