I'll keep my fingers crossed !!!

PetersPlease have a seat.
AlbertThank you
Peters I'm Mr. Peters. The personnel manager. What can I do for you.
Albert I am looking for a position as a sales representative.
Peters We may have an opening next week. Please leave your resume, I will keep in touch with you.
AlbertThanks. I'll keep my fingers crossed.
Explanation :
If you cross your fingers , you put one finger on top of another and hope for good luck. If you say that someone is keeping their fingers crossed,you mean they are hoping for good luck.
Example : -
I'm keeping my fingers crossed that they turn up soon.