Hello,
The type of site you need is not suitable to do in wordpress as it is a big project. Wordpress will not allow a lot of custom feature which you might need and also the framework is not very secure. We will suggest to go for dot net as it can withstand any complexity. We need a detailed list of feature requirements like the modules, type of user, user interface, payment integration, booking feature, tabs/ sub-topics, etc along with the content of the site and if any api is required.
We are a company based in India with a team of dot net developers and designers. We have experience in building online stores, job portals, travel portals, saas applications, business websites, portfolio websites, service providing sites, booking engine, taxi dispatching app, mobile sites, mobile responsive websites, etc. So, if you want to see our work we're happy to share. For a quick example, please check our portfolio in freelancer.
We believe a discussion about the project will be convenient for both of us to decide anything so if you are interested please get in touch.
Regards,
OKTeam