There is edreams.com which offers what you are offering here, the prices there are the cheapest , they have insurance and can offer to give you money back if you change your mind and don't want to go on a flight anymore. All of their reviews are positive. For hotel booking there is booking.com and others similar services.
You haven't told us any detail of your service. How do you expect people to believe you without any facts ?
give me the travel destination. follow that step
https://imgur.com/S65zhDx i will give price how much you pay