相談 and 依頼: discussing a solution or requesting an action
Identify who is consulted and what action is requested, without treating a request as acceptance or completed work.
Discussing a problem or decision
相談, read そうだん, means consulting someone about a problem or decision. 仕事の進め方を先輩に相談しました。 means that the speaker consulted a senior colleague about how to proceed with the work.
引っ越すかどうか、家族に相談します。 says that the speaker will consult family about whether to move. It does not assign the moving work to the family.
Asking for a specific action
依頼, read いらい, means requesting that someone do something. 業者に修理を依頼しました。 means that a repair was requested from a service provider.
資料の確認を同僚に依頼しました。 says that a colleague was asked to check the documents. に marks the person receiving the request, while を marks the work requested.
Consultation, request, and acceptance
まず費用を相談してから、修理を依頼します。 says that the costs will be discussed first, followed by a repair request. Preserve the sequence expressed by てから.
依頼しましたが、返事はまだです。 says that a request was made but no reply has arrived yet. Sending a request and receiving acceptance are separate stages.
Does 修理を依頼しましたが、返事はまだです。 establish that the provider accepted the repair request?
Show the answer and why
No. The repair was requested, but there has been no reply. Neither acceptance nor completion can be assumed.