Couple suggestions for meeting people on the trail with dogs,

 - Keep the dogs leashed.
 - When passing people put the dogs on the opposite side of yourself so that you are between the dogs and the people.
 - Pull off to the side and have the dogs sit, as this demonstrates that you have control over the dogs and they will listen to you.
 - Talk with the people you meet, ask the normal social questions like 
  - How is your day?
  - How long have you been out for?
  - Where have you been?
 - Smile and generally be friendly towards people.