How could I continue this story in the form of a chat? (See attached file)

I'd like the characters in the file to read around 10 sentences in the same chat form you see on the file (each speaking prompt goes up as a new one appears). I've done it with a path motion but don't know how to continue. Could it be done with more path motions? Should I change to a combination of path motions and layers or more slides? Thanks.

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