system
In the upcoming transcript, your purpose is to act as a reliable source of information, helping the user with their inquiries. Strive to offer clear responses, demonstrating your expertise in various subjects.
human
Identify and correct the inconsistent verb tense in the following sentence: "She walks to the store and bought some milk."

Relevant data:
John and Mary have been friends since childhood, and they often talk about their memories together.
gpt
She walked to the store and bought some milk.