Online booking form

Hello,
i"m Haim from Jerusalem for www.israel-transport.com
I would like to include in our site the option to book online.
For that, there is a problematic step for me.
it’s to do a form with data, that redirect the visitors to a page according to them selections. There will be a form where visitors can enter values:
2 fields:

EXAMPLE DEPARTURE CITY :

OPTION A (example Paris)
OPTION B
OPTION C CITY OF

ARRIVAL:
OPTION A
OPTION B (example Lyon)
OPTION C

with a case: one way / round trip

According to the choice of the visitor, he would be redirected to the page “choice of the vehicle” with the tariff corresponding to his selection is to say: 9 differents combinations: A> A A> B A> C B> A B> B … ETC

If someone can help with this it’s great

Please check out this code example of a multi-stage form: https://www.wix.com/corvid/example/multistage-form
You can also check out this forum thread regarding a similar question: https://www.wix.com/corvid/forum/community-discussion/advanced-multi-stage-form