How to talk about M&A internship with only pitches experience?

Hi,

I am about to have a PE interview for an internship and I am currently interning in an M&A boutique.
I only worked on pitches, and not a single deal.

How can I talk about my experience in an interesting way ?

Also given the fact that tasks given to interns are not that fulfilling...

Any ideas?

Thanks a lot,

Have a great week end!