Question:
Which employer did David O. Sacks work for in Aug, 1999?

Context:
 David O. Sacks works for Yammer from Sep, 2008 to Jul, 2014. 
 David O. Sacks works for Craft Ventures from Jan, 2017 to Dec, 2022. 
 David O. Sacks works for PayPal from Jan, 1999 to Jan, 2002.

Answer:
Question:
Which employer did David O. Sacks work for in Aug, 1999?

Context:
 David O. Sacks works for Yammer from Sep, 2008 to Jul, 2014. 
 David O. Sacks works for Craft Ventures from Jan, 2017 to Dec, 2022. 
 David O. Sacks works for PayPal from Jan, 1999 to Jan, 2002.

Answer:
user
PayPal
assistant
Question:
Which employer did David O. Sacks work for in Aug, 1999?

Context:
 David O. Sacks works for Yammer from Sep, 2008 to Jul, 2014. 
 David O. Sacks works for Craft Ventures from Jan, 2017 to Dec, 2022. 
 David O. Sacks works for PayPal from Jan, 1999 to Jan, 2002.

Answer:
user
Craft Ventures
Yammer
assistant
Question:
Which employer did David O. Sacks work for in Aug, 1999?

Context:
 David O. Sacks works for Yammer from Sep, 2008 to Jul, 2014. 
 David O. Sacks works for Craft Ventures from Jan, 2017 to Dec, 2022. 
 David O. Sacks works for PayPal from Jan, 1999 to Jan, 2002.

Answer:
user
PayPal
assistant