Posting the answer if it helps some one facing the same issue.
I found that a pretty straight forward solution for How to do this is given in the iOS Developer Library. Please refer to the following link:
https://developer.apple.com/library/content/documentation/Swift/Conceptual/BuildingCocoaApps/MixandMatch.html#//apple_ref/doc/uid/TP40014216-CH10-XID_75
Apple Doc says:
To import a set of Objective-C files in the same app target as your
Swift code, you rely on an Objective-C bridging header to expose those
files to Swift. Xcode offers to create this header file when you add a
Swift file to an existing Objective-C app, or an Objective-C file to
an existing Swift app.
So I created MyApp-Bridging-Header.h file and just added the following line:
#import "MyModel.h"
Now it lets me use the model in my ViewController.swift as follows:
var myModel = MyModel()
myModel.name = "My name"
myModel.dobString = "11 March,2013"
println ("my model values: Name: \myModel.name and dob: \myModel.dobString")
FYI to anyone who is trying to figure this out. If you have to create the bridging file from scratch, you also have to specify a path to it in Build Settings > Swift Compiler > Objective-C Bridging Header.