Get the CDR logs based on given IMSI or Start time and End time.
Returns the CDR logs based on the provided IMSI, Start Time, and End Time. If only IMSI is provided, the output will include all CDR logs associated with that IMSI. If both Start Time and End Time are specified, the output will include all CDR logs generated up to the specified End Time. The time format is "YYYY-MM-DD HH:MM:SS"(e.g., 2024-08-22 15:30:00).