Management software for a tour operator agency wanted

I will soon be opening a travel agency for vacationers with dogs, but I am not yet selling airline and train tickets. I am looking for a suitable software solution for my company, which should support the following functions:

• Master data management (customers, service providers, hotels)
• Data analysis (statistics broken down by various criteria and categories)
• Newsletter function
• Interface to the e-mail inbox (allocation of all correspondence to individual files)
• Calendar, notes and reminder function
• Quotation management and text file creation
• Invoice management
• Accounts receivable and payable, dunning process
• Transfer of data to financial accounting

One workstation is planned for the time being.