Hello, Good afternoon
expression
Connie Chihuahua (こんにちは) says hello. Connie Chihuahua is an amazing talking chihuahua. She can only say "hello", but that alone is pretty impressive. こんにちは is a formal way to say "hello". It’s generally used during the daytime, from late morning to early evening. Watch out for the は on the end, which is always pronounced わ.
先生、こんにちは。
Hello Sensei.
アヤちゃん、こんにちは。
Hello Aya.
こんにちは、ジェニーです。
Hello, I'm Jenny.