Please assess the completion status of the following clinical trial:

Trial Title: Open-label Study of the Effects of Montelukast in Patients With Chronic Cough

Study Design Characteristics:
- Allocation: None
- Intervention Model: SINGLE_GROUP
- Observational Model: None
- Primary Purpose: TREATMENT
- Time Perspective: None
- Masking: NONE
- Phase: PHASE4
- Number of Arms: 1.0

Eligibility Criteria:
Inclusion Criteria:~* Patients with chronic cough: cough persisting for more than 8 consecutive weeks~Exclusion Criteria:~* Current use of ACE-inhibitors~* Use of systemic steroids in the last 4 weeks~* COPD~* Pregnancy~* Concomitant severe disease~* Smoking

- Gender: ALL
- Minimum Age: 12 Years
- Maximum Age: 60 Years
- Healthy Volunteers: f

Study Arms:
- Montelukast (Type: ACTIVE_COMPARATOR): Montelukast tablets: adults - 10 mg, children - 5mg taken daily for two weeks

Based on this trial design, predict the completion outcome and termination type (if applicable).