Here are some tips on how to accept an interview invitation:

• Address the internship coordinator by name.
• Thank them for the opportunity to interview.
• State your weekday availability (remember to specify Eastern Standard Time).
• Put your phone number.
• Let them know you look forward to speaking with them.

Here are some tips on how to politely turn down an interview invitation:

• Address the internship coordinator by name.
• Thank them for the offer to interview for the position.
• Politely inform them that you have already accepted an internship with another organization.
• Thank them again for their time and for reviewing your application.

If an unforeseen emergency happens and you miss your interview, follow these tips to apologize and request a new interview time.

• Address the interviewer by name.
• Ask them to please accept your apology for missing the interview with XYZ organization on <Date Time>. Tell them that you experienced an unforeseen emergency that prevented you from being able to attend the interview.
• Reassert that their company offers an invaluable opportunity and you appreciate any consideration they could give you in rescheduling your interview.
• Write 2-3 sentences reasserting why you would be a good fit for the internship position.
• Thank them for their understanding and say that you hope you will be able to speak with them in the near future to discuss your qualifications for the position.