Breakdown of moshi youken ga owattara, eki mae no kafe de aimashou.
Questions & Answers about moshi youken ga owattara, eki mae no kafe de aimashou.
もし adds an if feeling and signals a condition: if your business is finished...
It is often used with condition forms like たら, ば, なら, and と. In this sentence, it pairs with 終わったら.
It is not strictly necessary. You could say:
用件が終わったら、駅前のカフェで会いましょう。
and it would still be natural. Adding もし just makes the conditional relationship a little clearer or more explicit.
