LONDON (Reuters) - Europe's largest tour operator TUI is aiming to expand its profit margin for its markets and airline unit to over 3% in the medium term, it said on Tuesday ahead of a capital markets day in Madrid.

TUI is looking to enhance its network and sell more seat-only flights as well as offer more business-to-business opportunities in an effort to make its traditional holiday package business more flexible.

"The goal is to...offer customers more products and significantly increase the number of customer contacts throughout the year," Chief Executive Sebastian Ebel said in a statement.

Ebel told journalists in February that TUI wants to expand beyond its packaged-holiday business, becoming more resilient through a wider offering of amusement and experience packages via an app.

In Tuesday's statement TUI also said that it is considering renewing some of its Marella cruise ship fleet to target the British market and is in talks for two new ships to be built and available by 2031.