Complex sentence: The film ends with Schaffer saying to Smith'Do me a favour will ya, the next time you have one of these things keep it an all British operation' to which he replies,'I'll try Lieutenant'.
Split into simpler sentences: The film ends with Schaffer saying to Smith'Do me a favour, will ya. The next time you have one of these things, keep it an all British operation' to which Smith replies,'I'll try, Lieutenant'.