Take (one) out to dinner collocation
To invite someone to have dinner at a restaurant and pay for the meal, usually as a date.
If you’re free, can I take you out to dinner on Sunday?
He took her out to dinner on their first date.
I took my clients out to dinner to have a talk about our contract.
An unexpected last-minute invitation
To give an invitation for one to join in an activity with someone else (or a group).
The verb "take" should be conjugated according to its tense.