Hello.
user
Hello, how may I serve you?
assistant
I would like to change my existing reservation due to postpone of my seminar. Could you please help me?
user
Sure, I will help you. Please provide the name on which ticket was reserved.
assistant
I am Janet Harris.
user
Sorry, there is no reservation existing on your given name in our records.
assistant
No worries, thank you for the information.
user
You are welcome, have a nice day.
assistant