Dear Madam or Sir,
I have great experience in Machine Learning. As a mathematician I am familiar with the theoretical background, and as a software developer, I am familiar with the best practises of the implementation of scalable, testable, and maintainable software.
I have implemented almost every machine learning algorithm from scratch in Python, and Matlab. Moreover, I am familiar with the standard machine learning algorithms in Python, Matlab, R, C#, and Java.
Did I understand you correctly that you want to suggest to a user new flight deals, or new hotel deals bases on the deals he has already clicked on or has bocked in the past?
In this case would not suggest using deep learning, but using conventional (statistical) suggestion techniques. There has been done very few research on deep learning for suggestion. However, the theory for suggestion engines is well established.
In order to discuss all the details I am looking forward to chat with you.
Best regards