176763
Departure times for these flights as specifed during booking are by definition approximate , with the settlement service optimized on the fly depending on local demand for a given day .
 None
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
 Entities:  
Answer:
 None