Let's start with greetings and introductions.

Greetings

*おはようございます (Ohayou gozaimasu) - Good morning (until around noon)

*こんにちは (Konnichiwa) - Hello / Good afternoon (from noon onwards)

*こんばんは (Konbanwa) - Good evening

*はじめまして (Hajimemashite) - Nice to meet you (for the first time)

*ごきげんいかがですか (Gokigen ikaga desu ka) - How are you? (formal)

Introductions

*私は...です (Watashi wa ... desu) - I am ...

 * ...さんはじめまして (San hajimemashite) - Nice to meet you, ...  (after stating your name)

   *名前は...です (Namae wa ... desu) - My name is ...

Basic Questions and Answers

*あなたは誰ですか (Anata wa dare desu ka) - Who are you? (informal)

*お名前は何ですか (Onamae wa nan desu ka) - What is your name? (formal)

*どちらから来ましたか (Dochira kara kimashita ka) - Where are you from?

*日本語が話せますか (Nihongo ga hanasemasu ka) - Can you speak Japanese?

*はい (Hai) - Yes

*いいえ (Iie) - No

*わかりません (Wakarimasen) - I don't understand.

Phrases

*お願いします (Onegaishimasu) - Please

*ありがとうございした (Arigatou gozaimashita) - Thank you

*どういたしまして (Dou itashimashite) - You're welcome

*すみません (Sumimasen) - Excuse me

*さようなら (Sayonara) - Goodbye

Practice Conversation

Teacher: こんにちは (Konnichiwa)! はじめまして (Hajimemashite)!

Student: こんにちは (Konnichiwa)! はじめまして (Hajimemashite)! 私は ... です (Watashi wa ... desu).

Teacher: ...さんですね (San desu ne). 私は先生です (Watashi wa sensei desu).  日本語を勉強したいですか (Nihongo o benkyou shitai desu ka)?

Student: はい (Hai), 勉強したいです (Benkyou shitaidesu).

Here are some additional tips for learning basic Japanese conversation:

 * Focus on pronunciation: Pay attention to the sounds of Japanese words.

 * Practice regularly: Even a short practice session every day can be helpful.

 * Listen to native speakers: This will help you get used to the natural flow of conversation.

 * Don't be afraid to make mistakes: Everyone makes mistakes when learning a new language.

 * Use online resources: There are many websites and apps available to help you learn Japanese.