Сонсголыг хуваалцах

Where is the check-in counter for Delta Airlines? Can I have a window seat, please? Can I have an aisle seat, please? How much is the excess baggage fee? Where can I drop my luggage? What time does the flight depart? Is this the line for security check? Could I see your passport, please? Do I need to remove my shoes? What gate is my flight leaving from? Is my flight on time?