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“ Delta has received reports of attempts by parties not affiliated with us to fraudulently gather customer information in a number of ways including : fraudulent emails , social media sites , postcards , Gift Card promotional websites claiming to be from Delta Air Lines and letters or prize notifications promising free travel , ” states the Delta Air Lines warning .
 fraudulent emails: tool; Delta Air Lines: trusted entity; letters: tool; prize notifications: tool; gather customer information: purpose; promising free travel: attack pattern; social media sites: tool; postcards: tool; Gift Card promotional websites: tool
Given event type and trigger, please tell me the arguments of all the listed option. Output format is "name1: role1; name2: role2". 
Event type: phishing 
  Option: victim, attacker, attack pattern, purpose, damage amount, tool, time, place, trusted entity 
Text: {0} 
Answer:
 fraudulent emails: tool; Delta Air Lines: trusted entity; letters: tool; prize notifications: tool; gather customer information: purpose; promising free travel: attack pattern; social media sites: tool; postcards: tool; Gift Card promotional websites: tool