You've finished this scene

Lestrade's permission covers only himself and Holmes. Holmes changes his earlier decision about going out and asks whether they can still reach Hereford by train in time to visit James that night. Reassured that they can, he decides to go and tells Watson that the absence should last only about two hours.
"Yes, but only for you and me."
「あるが、きみと私の分だけだ」
"Then I shall reconsider my resolution about going out. We have still time to take a train to Hereford and see him to-night?"
「では、出かけることについての決心は考え直そう。まだ列車でヘリフォードへ行き、今夜彼に会う時間はあるかね」
"Ample."
「十分にある」
"Then let us do so. Watson, I fear that you will find it very slow, but I shall only be away a couple of hours."
「では、そうしよう。ワトソン、きみには退屈かもしれないが、ほんの二時間ほど留守にするだけだ」