3a) Jim: You went to the Lake District, didnt you?
3b) ˈYou ˈwent | to the `Lake District, ˏdidnt you?
3c) ↘ju went ˊtə ðə leɪk ˌdɪstrɪkt, ̗dɪdn̩t ju?
4a) Margaret: No. Scotland.
4b) `No. `Scotland.
A few comments on Jim's intonation:
To my ears "you went" is a fall from high to mid and "to the lake" from mid to high again. "district" is said at bass level and the tag question "didn't you" rises from low to high.