1. Is there a way that I can have 2 images on cypress flash ?
Yes, please enable 'Dual Application Bootloader' feature in Bootloader configuration window. Please refer to section: 'Dual-Application Bootloader Considerations' in AN73854.
2. If yes, is there a way where I can decide which application image I want to jump (give flow control)
You can refer to section: 'Application Launch Process' in AN73854 and Dual-Application Bootloader with Combinaison Project
3. If there is any sample project or application note ?
AN73854 PSoC - Introduction to Bootloaders elaborate the steps. Please refer to PSoC 4 BLE_OTA_UpgradableStack code example available in PSoC Creator.