Complex sentence: When Rollo attempts to have a discussion about Vince's marketing plan, she suggests they have dinner, but she is forced to postpone when she remembers Rod is coming from Atlanta to discuss the running of the zoo.
Split into simpler sentences: When Rollo attempts to have a discussion about Vince's marketing plan, she suggests they have dinner. But she is forced to postpone when she remembers Rod is coming from Atlanta to discuss the running of the zoo.