Hi.
Hello, How can I best serve you today?
I am frustrated with your service because your agent has booked a ticket on wrong date, so I want to cancel my reservation.
Sure, I am here to help you with that, can I know your good name to proceed further?
James Lee here.
 I am very sorry to inform you that there is no reservation found under your name in our database.
That's ok, thank you for your help.
Thank you for choosing us.