  We describe Lefschetz-Bott fibrations on complex line bundles over symplectic
manifolds explicitly. As an application, we construct more than one strong
symplectic filling of the link of the $A_{k}$-type singularity. In the
appendix, we show that the total space of a Lefschetz-Bott fibration over the
unit disk serves as a strong symplectic filling of a contact manifold
compatible with an open book induced by the fibration.
