Here we are asked to state which day is inconvenient to have a picnic for Michiko, Sue, and Robert and to state why each day is convenient for him or her. There are two parts to answering these questions.

The first part is to listen to the dialogue closely to gather the information that we will need. Tracking three separate voices each talking about different days and different tasks might be difficult, but the most important thing to do is to pay attention to who is talking, to which day they are referring, and what reason they supply for it being inconvenient.

We can figure out who is talking by listening for the end of each speaker’s sentence, wherein they ask the next person for their availability. Then, we need to listen for the days to which each speaker is referring. Lastly, we can use the ‘～から’ grammar point to identify which sentences were used as reasons.

If we listen closely, we hear that Saturday is inconvenient for Michiko because she has a part time job that day, that Saturday is inconvenient for Sue because she has a friend coming, and that Sunday is inconvenient for Robert because he has a test tomorrow.

The second part to answering these questions is taking the information that we collected and turning it into Japanese sentences. The structure of these sentences is very similar to the explanation sentences we have already practiced, so we should be able to construct these sentences building on the knowledge we have already learned.

To say that something is ‘for’ someone (in the sense that it is either going to them or that it is affecting them), we mark the indirect object (the ‘someone’) with the particle ‘に.’ In this case, we could even mark them with the compound particle ‘には,’ which combines the particles ‘に’ and ‘は’ to add emphasis and a point of comparison to the marked noun. As we haven’t learned this particle use yet, we will stick to the standard ‘に,’ but ‘には’ is just as accurate if not more appropriate for these answers. We will also use a new vocabulary word, the な-adjective ‘不便（ふべん）,’ which means ‘inconvenient.’ We could alternatively use the negative form of the な-adjective ‘暇（ひま）.’

Saturday is not convenient for Michiko because she has a part time job that day. We answer as follows:
土曜日はみちこさんに不便です。アルバイトがありますから。
（土曜日はみちこさんにふべんです。アルバイトがありますから。）

Saturday is not convenient for Sue because she has a friend coming that day. We answer as follows:
土曜日はスーさんに不便です。友達が来ますから。
（土曜日はスーさんにふべんです。ともだちがきますから。）

Sunday is not convenient for Robert because he has a test tomorrow. We answer as follows:
日曜日はロバートさんに不便です。明日はテストがありますから。
（日曜日はロバートさんにふべんです。あしたはテストがありますから。）

Building off the information gathered to answer the previous question, we can answer the question of when the group of friends will go for a picnic.

In the last line of the dialogue, after Michiko, Sue, and Robert have stated which days do not work for them and why, Takeshi says, ‘well, shall we go next week?’ In the original Japanese, this is ‘じゃあ、来週行きましょうか。（じゃあ、らいしゅういきましょうか。）’ Note that ‘じゃあ’ is the casual contraction of ‘では,’ which is used here to mean something like ‘then’ or ‘well.’

Because they are going next week, we answer as follows:
来週行きます。（らいしゅういきます。）