An 8-year-old boy is brought to your office with the complaint of abdominal pain. The pain is worse during the week and seems to be less prominent during the weekends. The patient's growth and development are normal. He has one soft stool a day, and does not complain of painful defecation. The physical examination is unremarkable, with no masses, no rebound tenderness, and no guarding. Laboratory screening, including stool for occult blood, CBC, urinalysis, and chemistry panel yields normal results. Which of the following is the best next step in the care of this patient?