Hotels.com has awarded creative chores on its ad account to Doner, sources said last week. Estimated billings are $55 million. The Southfield, Mich.-based independent bested Hill, Holliday, Connors, Cosmopulos in Boston in the final round of the review, said sources. The online travel company handles media in-house. Sbi.Razorfish in Portland, Ore., which most recently worked on creative, did not participate in the review.