Aggregate Report for large Dataset

Hi Everyone!

I have a very large data set showing lists of different airlines that customers have taken in the last year. How do I create an aggregate report of each customer's airline history? I attached an example of the data set that I'm working with.

NOTE: The database of records might have different variations of a customer's name, company & email address but it's easy to see it's the same individual.

Any insight that can be provided would be great.

Thanks!