To do a United Airlines booking, follow these steps:
Go to the United Airlines website or mobile app.
Enter your departure and arrival cities, travel dates, and the number of passengers.
Choose your preferred flights from the available options.
Review the flight details and fare rules, and select any add-ons you want.
Enter your passenger information and contact details.
Review your booking and confirm your payment.
Receive your e-ticket via email.
Alternatively, you can also book your United Airlines flight through a travel agency or over the phone with United Airlines customer service.