Airplane tickets

This is what I am working on this week. I decided to fly to Copenhagen first, stay at my sister's place and travel around Denmark. My classmate, Annie, is going to Aarhus, Denmark to exchange for a semester. We will travel together for about two weeks. Since she has to move in to her dormitory on August 1st, we decided to arrive in Copenhagen on the 31st of July, then she can stay with me at my sister's apartment and go check in at her school dorm the day after. I asked my Mom to contact her friends in the travel agency, but bad news came first. Almost all the cheap tickets for the Economy Class are reserved, therefore it would be difficult to buy the right and cheap tickets. We are still working on that and see if there are other options.

Another problem is that because I am exchanging for a year, and the spring semester ends in June, I will stay in Europe to travel more until July. It would be hard to buy round trip tickets because right now I have no idea where is my final destination in Europe before I fly back to Taiwan. I would most likely fly back from Frankfurt, Germany, since it's the nearest international airport to Cologne. The solution will probably be that I buy a one way ticket first, the during my stay in Germany, I can decide then how to buy my ticket back to Taiwan. We'll see.