- Mrs. Quyen calls Mrs. Smith from Hanoi to say that she and her husband Thanh are coming to San Francisco on Monday for a three-night tour. - Mrs. Smith invites them to stay at her house, but Mrs. Quyen declines because their accommodation is included in their tour ticket. - Mrs. Smith then invites Mrs. Quyen to dinner on Wednesday, which she accepts. However, Thanh cannot make it because he has a business meeting. Mrs. Smith agrees to pick Mrs. Quyen up from her hotel at 7pm on Wednesday for dinner.