Answer:
The correct answer is- The receptionist told the manager that he had booked his flight tickets for Monday
Step-by-step explanation:
Indirect speech is the expression any statement of a consverstaion that occured in past without quoting explicitly. Indirect speech is the stating any quoted statement in simple statement. In this type of speech some grammer and certain noun and pronoun change accordingly.
So the correct indirect speech of the receptionist said to the manager,'I have booked your flight tickects for Monday'. would be The receptionist told the manager that he had booked his flight tickets for Monday