You might have to give up on a few words and re-arrange things. For example:

> "It's a pleasure to be here," Electron replied with a smile.

You also can omit "X said" a lot of times. A new paragraph indicates a change in speaker, and when there are only two it can be clear. Once every three or four quotes you can clarify who is talking.

> "I'll come visit you every now and again, if I'm not too busy," said Electron.
>
> Colin smiled. "I'm sure the other patients will appreciate that as well. You been to the children's ward yet?"
>
> "Not yet, I think I'll leave that for last. The kids won't want me to go, you know?"
>
> "You're a good man, Electron," Colin replied, nodding. "I think we're gonna get along just fine. It's a pleasure to have you in my city."
>
> "It's a pleasure to be here!"

Consider looking up synonyms for "said" and also sometimes replacing "said", like: 

> "I'm sure the other patients will appreciate that as well," Colin smiled.

In the last case, "smiled" takes the place of "said" and implies Colin was talking and smiling.