をしたいのですが

I would like to do...

→ を
phrase Uncommon #14,055
I would like to do... A polite, indirect way to say that you would like to do something, often before making a request or asking for assistance. のですが softens the statement and leaves the request implied.
JA: トムと少し話をしたいのですが。
EN: I’d like to talk with Tom for a little while.

時間の確認をしたいのですが

I’d like to check the time.

乗馬をしたいのですが

I’d like to go horseback riding.

手続きをしたいのですが

I'd like to complete the necessary procedures.

先日お詫びをしたいのですが

I'd like to apologize for what happened the other day.

卓球をしたいのですが

I'd like to play table tennis.

フライト再確認をしたいのですが

I'd like to reconfirm my flight.

予約再確認をしたいのですが

I'd like to reconfirm my reservation.

明日もう一度あなたの検査をしたいのですが

I'd like to examine you again tomorrow.