I will keep this short as I know you have many bids.
Having worked as a lead designer for an engineering company, I have had to design flow charts on many occasions; they were often used by the company director during meetings.
This job will receive my full attention from the beginning as I understand you're pushed for time. I have plenty of experience dealing with tight deadlines within a busy workplace therefore this job will not be difficult for me to complete before Sunday the 23rd. Rest assured, I never compromise quality when completing tasks under pressure so you can expect top quality results before your deadline.
Thanks for your time,
Ryan