Compound sentence: The responsibility for bad service is often a collective one, involving both the service provider and the consumer. This sentence contains two clauses, connected by the conjunction "involving," increasing the complexity of the sentence.
Parallel structure: Effective communication and constructive feedback are crucial in this dynamic. This sentence uses parallel structure, connecting two actions, "Effective communication" and "constructive feedback," enhancing the expression ability.
Noun phrase: within the company. This is a noun phrase used to modify the previous action "shared responsibility," increasing the amount of information and complexity in the sentence.
Gerund phrase: contributing to the quality of service. Here a gerund phrase "contributing to" is used to indicate purpose, showing that employees, management, and stakeholders all contribute to the quality of service, adding complexity to the sentence.