Hello.
user
Hello, how may I give assistance to you?
assistant
 I made a reservation earlier this week to give a seminar, but my seminar has been postponed. Can you help me to change my reservation on the name of Jessica Brown?
user
Sure, hold a minute.
assistant
Sure.
user
There is no reservation found on your name.
assistant
No problem, thanks for your service.
user
Thank you for choosing us.
assistant