Dear :

We are very pleased with our office at [office building] and the maintenance and facilities of the building. As our office lease will expire by the end of this year, we would like to renew it for another years. Shall we make an appointment to discuss the rent and other details?

Please give me a call at [phone number], from a.m. to p.m., Monday through Friday.

Best regards,

[name]

[title]