When you are plans are definite, use GOING TO. When you dream of doing something, use WILL. When you're talking about actions that are far into the future (months or maybe years from now), use WILL. When you're talking about actions that you will do soon (tomorrow or next week), use GOING TO.

Will going to examples?

Using “going to”

For plans or decisions made before speaking. Is John coming home soon? – Yes, I'm going to meet him at the airport tomorrow. I'm going to watch TV in a minute, because my favourite programme is on.

What is the difference between shall will and going to?

Use 'will' for requests too. If you want to make an offer or suggestion with I/we, use 'shall' in the question form. For very formal statements, especially to describe obligations, use 'shall'.