GOING TO + INFINITIVE We use this form to speak about plans or events that are very obvious.
We use this form to speak about: Things we haven't planned or predictions. Decisions we have made at the moment of speaking. With expressions related to thinking (e.g. think, sure, hope )
We can use the present continuous for the future, but we should always make it clear what moment we are speaking about.
We use the present simple to talk about timetables and schedules.