Code or script to download data from a website

I need a script written that will downlod data for me from a website. The website is singaporeair.com. Their search engine for available flight dates only allows someone to search for available flights day by day. One needs to enter a date and then click on “next day” or “previous day” for the new data to come up. I need a script or code that will click for me and then download or save the results in a spreadsheet or anywhere that is a nice readable format. My goal would be that i could come back after an hour and just have all the data readily available in front me. For example, if i am looking for a flight from Paris to Hong Kong on March 20, the flight might not be available. On the site, I must click on “next day” or “previous day” for the new data to come up. The site then conducts a new search. This all takes a ling time especially if looking for many different dates and destinations. The script should do all the clicking for me. I can then look at the result over, say, a 2 month period and see what or is not available in a single glance as opposed to waiting for 30 minutes as the I check the site day by day.