You have also Loft...
Copy move sections for more easy process... Join the 2 circular sections if they are half... Then Loft the 3 sections

Order of selection of the sections is very important!
Caps or not caps is possible, loose, straight style can be also asked depending of wanted resultat!



And of course at the end if you ask Show Points for the "middle section"
you will have Real Time deformation! ;)
Any selection of Points can be moved in any directions!