Hello. I am Margaret Roberts.
user
Hello. How may I help you Roberts?
assistant
I had planned to attend an event, but it was postponed. Can you change my recent reservation?
user
Please wait for a moment.
assistant
Ok, take your time.
user
Sorry, there is no reservation found with your details.
assistant
That's ok. Anyways, thank you for your help.
user
Most welcome.
assistant