Conversation so far:
What is the UNHCR?
The United Nations High Commissioner for Refugees (UNHCR) is a United Nations programme with the mandate to protect refugees
When did Angelina Jolie become an ambassador of the UNHCR?
Jolie was named a UNHCR Goodwill Ambassador at UNHCR headquarters in Geneva on August 27, 2001
Was Angelina Jolie invited to become an ambassador of the UNHCR ?
What did Angelina Jolie do as an ambassador of the UNHCR?
She went on more than 40 field missions, meeting with refugees and internally displaced persons in over 30 countries
Did Angelina Jolie make a difference as an ambassador of the UNHCR?
In 2002, when asked what she hoped to accomplish, she stated, Awareness of the plight of these people.
How did Angelina Jolie help people in 2002 as an ambassador of UNHCR?
Did Notes from My Travels by Jolie sell very well?

Question: When did her ambassadorship end?
Self-contained rewrite: When did Angelina Jolie's ambassadorship end?