This is the basic workflow you need to run to buy tickets from any airline.

Regular Booking

1. AirShopping
2. OfferPrice
3. OrderCreate (without Form of Payment)
4. AirDocIssue

Booking Workflow with Autoticketing

1. AirShopping
2. OfferPrice
3. OrderCreate (with Form of Payment)

Booking with Seats

1. AirShopping
2. OfferPrice
3. SeatAvailability
4. OrderCreate (with Form of Payment)