Hi. I am Helen Perez.
Hello, how may I help you?
 I made my reservation in advance, but now found out I don't have any leaves so want to cancel my reservation.Please help me to cancel it.
Sure, I will help you.
Thank you.
Please wait for a while.
OK.
Sorry Perez, there is no active reservation found with your name in our records.
That's Fine. Thank you.
Thank you for approaching us.