This document presents a study on factors influencing customers' intention to use instant messaging to communicate with hotels. The study aims to examine how perceived usefulness, ease of use, media richness, social presence, self-efficacy, frequency of use, task complexity, and task urgency impact customers' intention to use instant messaging. A conceptual model is proposed and hypotheses are developed based on the technology acceptance model, computer-mediated communication theories, and task characteristics literature. The study uses a randomized experiment with different task complexity and urgency scenarios to test the hypotheses. Initial results are presented and limitations and future research directions are discussed.