We refer to Mr Benjamin Puah Hong Beng's letter (Why didn't SIA use a local bank for bond issue?, Jan 18).

Due to commercial sensitivities, we are unable to disclose the reasons behind the selection of banks for our recent US dollar bond issue.

Singapore Airlines has extensive and strong relationships with all Singapore banks. For example, last year, DBS Bank was the sole financial adviser and joint lead manager for our $8.8 billion rights issue.