Hi.
user
Hello. How may I help you?
assistant
Yesterday I booked a ticket to New York through your agency, your agent by mistakenly booked a ticket on wrong dates, so I want to cancel my reservation.
user
Please wait for a moment, let me check your details.
assistant
Ok, sure.
user
Can I know your name?
assistant
I am William Taylor.
user
Sorry Taylor, there is no reservation found with your details.
assistant
Oh! ok, thank you for the information.
user
Most welcome.
assistant