Hi.
user
Hello. How can I aid you?
assistant
Due to bad weather, my FIFA tournament rescheduled to future dates. So I want you to change my existing reservation?
user
Ok, may I know your name?
assistant
Sure, I had a recent reservation with name Janet Garcia.
user
Sorry no reservation found on your name.
assistant
Ok, no worries at all.
user
Thank you, have  a nice day.
assistant
Thanks for your help.
user