The voices of two person should be different
Tanaka : Hajimemashite. Tanaka desu. Doozo yoroshiku.
Tanaka : How do you do? I'm Tanaka. Nice to meet you.
Satoo : Hajimemashite. Satoo desu. Doozo yoroshiku.
Satoo : How do you do? I'm Satoo. I'm glad to meet you.
Tanaka : Doozo ohairi kudasai.
Tanaka : Please come in.
Satoo : Hai. Shitsurei shimasu.
Satoo : Thank you.
I'm not a native Japanese speaker but I do know a bit of Japanese. I hope this helped.