Question:
Which employer did Eva Kreienkamp work for in May, 2016?

Context:
 Eva Kreienkamp works for Hamburg-Köln-Express from Oct, 2009 to Dec, 2014. 
 Eva Kreienkamp works for Versatel from Jan, 2002 to Dec, 2003. 
 Eva Kreienkamp works for Berliner Verkehrsbetriebe from Oct, 2020 to Dec, 2022. 
 Eva Kreienkamp works for Mainzer Verkehrsgesellschaft from May, 2015 to Jan, 2020. 
 Eva Kreienkamp works for Allianz SE from Jan, 1991 to Jan, 1996.

Answer:
Question:
Which employer did Eva Kreienkamp work for in May, 2016?

Context:
 Eva Kreienkamp works for Hamburg-Köln-Express from Oct, 2009 to Dec, 2014. 
 Eva Kreienkamp works for Versatel from Jan, 2002 to Dec, 2003. 
 Eva Kreienkamp works for Berliner Verkehrsbetriebe from Oct, 2020 to Dec, 2022. 
 Eva Kreienkamp works for Mainzer Verkehrsgesellschaft from May, 2015 to Jan, 2020. 
 Eva Kreienkamp works for Allianz SE from Jan, 1991 to Jan, 1996.

Answer:
user
Mainzer Verkehrsgesellschaft
assistant
Question:
Which employer did Eva Kreienkamp work for in May, 2016?

Context:
 Eva Kreienkamp works for Hamburg-Köln-Express from Oct, 2009 to Dec, 2014. 
 Eva Kreienkamp works for Versatel from Jan, 2002 to Dec, 2003. 
 Eva Kreienkamp works for Berliner Verkehrsbetriebe from Oct, 2020 to Dec, 2022. 
 Eva Kreienkamp works for Mainzer Verkehrsgesellschaft from May, 2015 to Jan, 2020. 
 Eva Kreienkamp works for Allianz SE from Jan, 1991 to Jan, 1996.

Answer:
user
Hamburg-Köln-Express
Versatel
Berliner Verkehrsbetriebe
Allianz SE
assistant
Question:
Which employer did Eva Kreienkamp work for in May, 2016?

Context:
 Eva Kreienkamp works for Hamburg-Köln-Express from Oct, 2009 to Dec, 2014. 
 Eva Kreienkamp works for Versatel from Jan, 2002 to Dec, 2003. 
 Eva Kreienkamp works for Berliner Verkehrsbetriebe from Oct, 2020 to Dec, 2022. 
 Eva Kreienkamp works for Mainzer Verkehrsgesellschaft from May, 2015 to Jan, 2020. 
 Eva Kreienkamp works for Allianz SE from Jan, 1991 to Jan, 1996.

Answer:
user
Mainzer Verkehrsgesellschaft
assistant