Flying Issue

[rv4life]

I know this is unrelated to camping but I am looking for some ideas.

I am staying in New York City this August. I am staying with relatives either for a week or two weeks. They would like me to stay for a week and then determine if I want to stay another week. How could I book

     a flight down from Rochester NY and still have an affordable flight back? I would need to book a week and then change

     the return date a day or so before I was supposed to fly home if I decided to stay another week. Normally there are huge fees for this. The other option is to buy a one way ticket and then buy another one way ticket a day or two prior to flying home. This would make the return ticket very expensive.

Any ideas on what

     I could do?


Thank you!