Hi! 
Hello, how can I help?
I need to check my balance, is this the right place?
Yes, I'll need your name, account number and PIN please.
My name is Sarah Brown but I don't know the other stuff. I lost the paper that I wrote it down on.
No problem. Can I have your date of birth?
15/09/1940
What was your mother's maiden name?
Her maiden name was Sanders, a wonderful woman God rest her soul.
And what was the name of the pet you had as a child?
That was Nemo. He was a goldfish.
Thank you, your current balance is 6709 credits. 
Thanks for all of your help.
Is there anything else that I can do for you?
That's all. Bless you.
Thank you and goodbye.