Refactor/add booking command

[iamgenechua]

No description provided.

[codecov-io]

Codecov Report

Merging #213 into master will increase coverage by 0.12%.
The diff coverage is 66.66%.

@@             Coverage Diff              @@
##             master     #213      +/-   ##
============================================
+ Coverage     73.46%   73.59%   +0.12%     
- Complexity      838      839       +1     
============================================
  Files           122      122              
  Lines          2536     2537       +1     
  Branches        312      313       +1     
============================================
+ Hits           1863     1867       +4     
+ Misses          560      556       -4     
- Partials        113      114       +1     

Impacted Files	Coverage Δ	Complexity Δ
...main/java/seedu/address/commons/core/Messages.java	0.00% <ø> (ø)	0.00 <0.00> (ø)
...ss/logic/commands/exceptions/CommandException.java	100.00% <ø> (ø)	2.00 <0.00> (ø)
.../address/logic/parser/AddBookingCommandParser.java	80.00% <50.00%> (ø)	5.00 <1.00> (?)
...eedu/address/logic/commands/AddBookingCommand.java	67.50% <70.00%> (ø)	11.00 <1.00> (?)
.../seedu/address/logic/parser/AddressBookParser.java	75.00% <100.00%> (ø)	17.00 <0.00> (ø)
...seedu/address/model/booking/UniqueBookingList.java	91.46% <0.00%> (+2.43%)	39.00% <0.00%> (+1.00%)

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