I buy the tickets.
I book the flight.
I was buying the tickets.
I booked the flight.
I am buying the tickets
I have booked the flight.
I bought the tickets today.
I will buy the tickets tomorrow.
I have bought the tickets.
The tickets are bought by me.
The flight was booked by me.
The flight is booked by me.
The flight has been booked by me.
The tickets have been bought by me.
The tickets will be bought tomorrow by me.
The tickets were bought by me
The tickets are being bought by me.
The tickets were being bought by me.