Dear Sir or Madam,
Although the delivery date for the goods under the Sales Confirmation No. 55 is getting closer, we haven't received so far any relative Letter of Credit. Please establish an L/C as soon as possible for our smooth shipment. In order to avoid amendments in future, please make sure the clauses of the L/C in full agreement with those of the Sales Confirmation.
Looking forward to your prompt reply. Thank you.
Yours Sincerely,
XXX