How to say “Politely describe interruption” professionally

Level 1: Thank you for reaching out. I'm currently focused on [current task/project] which has a [deadline/priority]. Could we circle back on this at [specific time/day] or perhaps schedule a brief meeting to discuss it further?

Level 2: I appreciate you bringing this to my attention. My current bandwidth is fully allocated to [high-priority project]. To ensure proper focus on both initiatives, could you advise on which existing priority I should deprioritize to accommodate this new request effectively?

Level 3: Understood. I've logged this as an 'ad-hoc priority shift' against my current sprint objectives. Per the Q3 OKR framework, should I anticipate a formal change request to reflect this adjustment to my allocated scope of work, or is this an implied directive?

Level 4: I cannot address this immediately without impacting the [critical project] deadline. If this new task is paramount, please provide explicit guidance on how to adjust my existing commitments and inform the relevant stakeholders of the revised timelines.

Level 5: I'm busy.

Level 1: Thank you for reaching out. I'm currently prioritizing [project phase/task] to ensure we meet the upcoming milestone. Could you provide a summary of your query via email, and I'll address it as soon as I complete my current focus?

Level 2: I understand this is important. My immediate attention is dedicated to delivering [current deliverable] as per our agreed timeline. To best serve your request without impacting current commitments, would you prefer we schedule a dedicated follow-up, or should we route this through your Account Manager?

Level 3: Acknowledged. Per the Statement of Work, all changes to scope require formal documentation. Is this new request within the agreed parameters, or should we initiate a change order process to reflect the adjusted project trajectory and associated resource allocation?

Level 4: I cannot take on additional requests outside of our current project scope without impacting the agreed-upon deadlines and budget. If this is a new priority, we'll need to formally revise our project plan and discuss the implications.

Level 5: Read the contract.

Level 1: Thanks for stopping by. I'm currently deep in concentration on [task]. Could we connect in about [time] or perhaps later this afternoon when I've wrapped this up?

Level 2: I appreciate you wanting to discuss this. My current focus is entirely on meeting the [deadline] for [project]. Would you mind sending me a brief email with the details so I can review it once I've reached a good stopping point?

Level 3: Ah, fascinating. I was just reaching flow state on a priority item for [stakeholder]. Is this a 'P0 blocker' that requires immediate synchronous dialogue, or can it be asynchronous via our designated communication channel, per team guidelines?

Level 4: I need to concentrate on this right now. If it's not urgent and critical for the next 15 minutes, please come back later or send me a message so I can respond when I'm free.

Level 5: Read the docs.