Will I be asked to give you more information as passport number? In cases of international travel, we may ask for passport information after the booking is complete. Was this article helpful? Can't find what you're looking for? Inquiry Form Related articles How do I update my passport information in my Giamso Tours MY BOOKING? What can I do if I don't remember the number of my reservation? I don't have a passport, can I make a reservation? How can I select seats for my flight? How much baggage is included in my reservation?