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