[19 ～ 20] 다음 글을 읽고 물음에 답하시오. Dear Sir or Madam, My daughter celebrated her 18th birthday in your restaurant last night and I am afraid that I must complain about the way she and her friends were treated. I reserved a table for twelve. However, when the guests arrived they were disappointed to be told that it was impossible to have everyone at the same table. They were surprised to find that in fact the group had to sit at three separate tables. I am sure that I asked for everyone to sit together when I reserved the table. My daughter felt it was not worth complaining at the time because the waiters were busy serving other customers. She said it would be pointless complaining, but I am not prepared to accept this because I am unhappy to have been treated with so little respect. However, I am confident that you will apologize, in which case we may be willing to use your restaurant again in the future. Sincerely, Melissa Higley (A)에 들어갈 말로 가장 적절한 것은?