将一个电子邮件任务分类，判断它是一份请求、通知、提醒还是其他类型的邮件。
Dear sir/madam, 
I am writing to request information about your company's services. Could you kindly provide me with details of your pricing and delivery options? Thank you for your time.
Sincerely, 
John Smith
请求请求信息。