会話は学習パートナーと一緒に練習すると効果的です。前半の駅での会話は旅行中によく使います。是非覚えましょう。後半の「i-Adjにちがいありません」は話し手の確信を示す表現です。優しいので、すぐ覚えられます。

It is efficient if you have a conversation with your study partner. The conversation at a railway station, in the first half, can often be used when you are travelling. "i-Adjにちがいありません" in the second half, is the expression which shows the speaker's conviction. It's easy to learn.