For Hiroshima Seminar in October, it turns out to be difficult to book a return flight seat from Hiroshima Airport on October 30 as those are in high demand. Therefore, the following flights are booked Mr. Uezu. Please note that the return flight departs from Iwakuni in Yamaguchi, instead of Hiroshima.

Oct 29: NH675 (Haneda 9:15 – Hiroshima 10:40) ← usual flight
Oct 30: NH636 (Iwakuni* 14:25 – Haneda 15:55)
*Iwakuni Kintaikyo Airport (IWK) is located in Yamaguchi Prefecture.

You may consider a flight from Iwakuni Kintaikyo Airport if you have a difficulty in booking a seat in a flight from Hiroshima.