If it is okay with you, I would like to communicate in English
I prefer to communicate in English if it is okay with you
「差し支えなければ」→ "If it is okay with you/If it isn't a problem"
「英語でのやり取り」→ "Communicate in English"
と言えます
「差し支えなければ、私は英語でのやり取りを希望しています。」
"If it is okay with you, I would like to communicate in English"
"I prefer to communicate in English if it is okay with you"
と言えます
アメリカ合衆国 
