Hello.
user
Hello, how may I assist you?
assistant
 I made a reservation earlier in this week to give a seminar, but my seminar has been postponed. Can you aid me to change my reservation?
user
Sure, may I know your good name please?
assistant
Rebecca Hall here.
user
Sorry, there is no reservation found on your name in our database to change.
assistant
No issue. Thanks for the help.
user
Thank you for approaching us.
assistant