how to write the mail which to reject their call in to the large plan in the respectful way? where they were asking me to prepare the time for their display though given which i’ve already oral to the single of their colleague. though right away they r promulgation me the mail which titillate us to have an appointment for them. though you r not engaging in their project. how to reply them in the good way??? any one can assistance me? interjection the million.