The Arctic Cruise from Bergen to Tromsø. Formal Letter

I am writing to get more information about your company offer ''Blue Water Holidays'' 6 day adventure into the Arctic Cruise from Bergen to Tromsø. Me and my friend would like to book a cruise with your agency. We are thinking about reservations on the Artic Cruise from the port of Bergen for February 15 through the 21th. I would be really grateful if your company would make my dream come true by seeing breathtaking Northern Lights. Can your travel company really guarantee witnessing the Northern Lights? I would be very grateful if you would recommend the best time for Northern Lights.…