Training Google Pegasus

I would like to train Google Pegasus found here for GitHub - google-research/pegasus

I would like it to be a paraphraser. My question is can I have a training set that has inputs consisting of two consecutive sentences and the output result which may be one sentence or two or even more.

I know one sentence as the input and one sentence as the output is the norm, but is the above scenario possible.

for example
I would like to go to the movies. Movie tickets are cheap.

Tickets are cheap so I would like to go to the cinema.