(C- 1)
If you pass through the United States on your way to a third country, you need to have an American visa. The interview needs to prepare the following materials:
Describe your visa and travel purpose in the destination country.
Prove that you will return to your own country or live permanently in other countries outside the United States.
If you have booked a plane ticket, you can provide specific flight information. However, please note that you must be eligible for a non-immigrant visa. Issuing tickets in advance does not guarantee that you will get a transit visa.