Ларавел требуется, если другое поле имеет значение
'last_name' => 'required_if:another_field,value'
Lokesh003
'last_name' => 'required_if:another_field,value'//Laravel required if it meet some value from another field
'booking_type' => [
'integer',
'required',
],
'booking_flight_description' => [
'required_if:booking_type,==,1' // you can use multi value by using ,
],