Creating data frame for a Call Centre

Consider a scenario where CALL CENTER data needs to be stored, having following
attributes: [Caller Phone Number, Caller Name, Caller Location and Call Duration]
TASK1:
Create the appropriate data structure to save the required data. Call center got five calls where:
• 1st Caller Name is ANIKET, talking from Delhi, his phone is 9041 and had called for 9
mins.
• 2nd Caller is from Chandigarh calling from 9888 number for 15 mins and telling her name
as MANISHA
• 3rd Caller is also from DELHI and was talking for continuous 30 mins, his registered
mobile number and name is 9646 and RAMAN respectively.
• 4th Caller mentioned himself as RAJNIKANT and explained his problem in 20secs from
7777 number from AP
• 5th Caller drops his call just after calling his number saved as 8899.
TASK2:
After 10 mins 3rd Caller again calls and gets his name rectified as DAMAN.
TASK3:
Team leader found problem in accessing data so he had given a requirement of saving Every Caller
data with number as CALLER1, CALLER2, CALLER3, CALLER4 and CALLER5 without
making it as an attribute.