The ornamental design for a nasalinterface, as shown and described.
FIG. 1 is a front perspective view of a Nasal Interface depicting a new design;
FIG. 2 is a back perspective view thereof;
FIG. 3 is a front elevational view thereof;
FIG. 4 is a back elevational view thereof;
FIG. 5 is a right elevational view thereof;
FIG. 6 is a left elevational view thereof;
FIG. 7 is a top plan view thereof; and,
FIG. 8 is a bottom plan view thereof.
The dot-dash broken lines represent the bounds of the claim and form no part of the claimed design. All other broken lines show portions of the nasal mask that form no part of the claimed design.