"I would like to…" indicates an intention, wish, or desire.

I would like to give you a present.
I would like to draw your attention to a very important issue.
I would like to become the Prime Minister of India.

"I would like to…" or "I'd like to…" (informal) is often used to give thanks:

I 'd like to thank all of you for attending this meeting.
I would like to express my deepest gratitude for all that you have done for us.