In capital markets, client expectations are often high and can sometimes conflict with market realities or product limitations. Describe a time you effectively managed client expectations, leading to the successful establishment or maintenance of a long-term relationship.

在资本市场工作中，客户的需求和期望往往很高，有时甚至可能与实际情况或产品限制存在偏差。请分享一次你如何有效地管理客户期望，并最终成功建立或维护了长期合作关系的经历。