[Soundwave gives the much larger bot a once over. Like he was looking for where he could take ten feet off his frame. At least until he offers a hand out to shake.]

Soundwave. I would offer to modify your frame, however this place currently lacks the resources to do so.

[If he found Roller's comment humorous or not, he doesn't really indicate on way or another. In the meantime, he can at least bring up the communication device he was given, and pings Roller a map with a few routes highlighted.]

These areas should accommodate you or your alt mode more comfortably. Or speak with one of the Cybertronians familiar with the holomatter avatars.