The Lady with the Dog Russian , translit.Dama s sobachkoy is a 1960 Soviet drama film directed by Iosif Kheifits. It was entered into the 1960 Cannes Film Festival.
Dmitri returns to his former life, bored with working and going to his club to play cards. He is haunted by Annas memory. At Christmas, Dmitri tells his wife he is going to St. Petersburg on business but actually goes to Saratov where he finally locates Anna who is attending an opera with her husband. Seizing an opportunity, he surprises her. She fears detection and promises to meet him in Moscow in a few weeks. Anna meets Dmitri in Moscow, their love fully rekindles, but they are frustrated with the reality that their marriages cannot be dissolved and they must meet secretly from then on. They make tentative plans to meet in the future. The closing scene has Anna looking from the window of her Moscow room while Dmitri leaves in the cold of the Russian winter.
Source: Wikipedia