Modèle de lettre-type (anglais) - Proposition de service (aide)

Dear [Mr or Mrs or Sirs], We have heard by [nom] that you are currently experiencing some problems with [...]. We expect that it must be very difficult for you to deal with this [problem]. As you know, we are specialist in [domaine] and we are in position to offer you [service]. We think that this might be useful for you in such circumstances. You have been so kind with us when we had to face [problème] last [période], that I wondered if we could do something for you in order to [service]. If this proposal agrees you, please contact us; we shall be very pleased to help you. Yours sincerely [votre nom] [votre fonction]