I am interested in writing a script for radio. I am interested in the best way to successfully do time transitions. The narrator is narrating and she starts off in the near present, then she transitions to the past. I think that transition I created is ok as I have her talking about a conversation that she had in the past, then I have her having the conversation. However I am struggling with how to transition her back to a point in the future ( I need to do this as I'd like her to reflect on the circumstances with the knowledge she has gained). Unlike visual mediums such as film, TV or theatre I can't have the character as her older self and change the surroundings to represent change in time. What other things can one do in radio apart from have a conversation to illustrate a time transition? Are there scripts either online or that I could buy that have some good examples of a narrator who goes backwards and forwards in time?