请帮忙翻译下面这几句话成英文

1.I'm to transfer my flights here.或，I am here to transfer to flights.
2.I have bought the ticket from here to Japan with the flight on 20th.
3.Excuse me. Where could I have my flights transferred, please?或Could you please inform me where to go through filght transferring procedures?

第2句，如简省为I have bought the ticket from here to Japan on 20th.易致歧义：1.已于20日购得机票；2.已购得20日当天的机票；故需补全—— with the flight on 20th.

1. I am in transit here.
2. I have bought the 20th air ticket from here to Japan.
3. Excuse me, where to handle the transfer formalities?

1. I come to rescue
2. I have already bought 20, to fly back to Japan from here the air ticket
3. Where the connection formalities?

I'm here to transfer my flight.
I have bought the ticket to Japan for the 20th.
Excuse me. Where can I handle the flight transfer procedures?