PPC Manager for Airport Transfer Service

I run an online booking system for airport transfers from Milan's three airports to approximately 30 destinations. I'm in need of a seasoned PPC manager who can create, manage, and optimise campaigns across Google Ads and Facebook Ads with the primary goal of increasing bookings.

Key responsibilities:
- Set-up and manage PPC campaigns on Google Ads and Facebook Ads
- Optimise for conversions and increase in bookings
- Ongoing management and fine-tuning of campaigns

Ideal skills and experience:
- Google Certified Partner
- Proven track record in increasing bookings via PPC
- Experience with the airport/transportation sector is a plus

I am looking for a long-term partnership. Please provide information on:
- Your previous experience and managed budgets
- Estimated costs for your services
- Any initial strategies you might propose.