もし、スケジュール調整などが必要ですぐに返信できない場合は 「Thank for your email. I will let you know my available date until 6 October.」などのようにいつまでに返答するかを明確に伝えましょう。
Thank you for your email. I look forward to hearing from you to schedule the interview soon. If possible, it would be very much appreciated if you could arrange the interview schedule except 9 October. I already have another appointment on that date.
Thank you again and apology for the inconvenience.
Thank you very much for your email. I really appreciate your arrangement but I will not be able to attend the interview on that date. It would be very much appreciated if you could rearrange the interview schedule for me from the following schedule.
1)10th October from 6pm
2)11th October from 6pm
3)12th October from 5pm
Could you let me know if you are not available even for these schedules. I will try to arrange another schedule and send you again. Thank you again and apology for the inconvenience.
Thank you for your email. I am very pleased to hear the announcement from you but I just receive another job offer elsewhere. After much consideration, however, I have decided to accept the offer. I am afraid that I have to drop this case. Thank you very much for your understanding.