You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: 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 existing reservation.

ASSISTANT: Ok, sorry for that mistake. May I know your name please?

USER: Myself Larry Rodriguez please check my with my name.

ASSISTANT: Ok, hold on for a moment.

USER: Ok.

ASSISTANT: Sorry Larry, there are no flights reserved on your name.

USER: Ok, fine thank you for your information.

ASSISTANT: Thank you for reaching us. Have a good day.