You have a room reserved for a hotel. When you reach the hotel, you find that there is no booking in…

The correct choice is: Show them your booking and give them time to workout the situation

Such errors are usually system mistakes that the front desk can fix. ‘Show them your booking and give them time to workout the situation’ is calm and practical. Losing your cool, demanding the General Manager at once or asking for a refund before the staff have even tried are over-reactions.

Hence the answer is ‘Show them your booking and give them time to workout the situation’.