Tens of thousands of people in Britain, Germany and Switzerland were vying for about 4,500 free tickets to Hong Kong from Cathay Pacific Airways on Tuesday, as part of a government campaign to reboot tourism in the city.

The Hong Kong flagship carrier’s website showed heavy traffic as 70,000 users at one point tried to win a free round-trip, economy-class ticket to the city and back to Britain, with some reporting difficulties in entering the giveaway.

The promotional drive is part of a 700,000-ticket lucky draw handled by local airlines under the government’s “Hello Hong Kong” campaign. The city is aiming to lure more than 1.5 million visitors after three years of pandemic-related travel restrictions.