Is this the right counter to check in for this flight?

这里是这航班办理登机手续的地方吗?

Your seat is 26 C, and the boarding time is twenty minutes before departure and you will board at Gate 18.

你的座位是26C，登机时间是起飞前20分钟，在18号门登机。

I'd like to check in.

我想办理登机手续。

Excuse me, where may I check in for flight 237 to Tokyo?

请问，我该到哪里办理飞往东京的273航班的登机手续呢?