Booking a flight pre-name change?

Hi! My fiance and I are going to be traveling to Thailand in December of this year for our honeymoon. We will be getting married in July, and delaying the honeymoon a bit to give ourselves a chance to recover (financially and energetically lol) from the wedding craziness.

Since we'll be traveling 5 months after our wedding, my name will already be legally changed. However, we want to book our flights soon. The airlines require full names and passport numbers. How will that work – since I'll be booking with my maiden name and current passport number, and traveling with my married name and updated passport number?

I figured asking here would be quicker than sitting on hold with Thai Airways haha.