Will there be sentences like "hello my name is..."?
I do not know, but if you just want to know how to say that simply:
Hajimemashite. Watashi wa [name] desu.
Or more casually: Hajimemashite. [Name] desu.
If you want to be more polite/formal you can do:
Hajimemashite. [Name] to moushimasu. (I am (humbly) called [name].)
(A literal way to say "my name is" would be: Watashi no namae wa [name] desu. But you probably don't need to say this entire sentence in an introductory conversation.)
I think some other language trees I've used have included conversational phrase lessons. Maybe as the Japanese course gets more developed they will add that? (Edit: Looks like there is a greetings section, I just tested out of it, whoops. Maybe they'll add more phrases to it?)