Fix idempotency check

api/api.go

diff --git a/api/api.go b/api/api.go
index 179d9a3..9542368 100644
--- a/api/api.go
+++ b/api/api.go
@@ -252,7 +252,7 @@
 		return nil, fmt.Errorf("invalid response. Idempotency check yielded error: %v", err)
 	}
 	var idemResp mpb.CreateBookingResponse
-	if err := jsonpb.UnmarshalString(idemHTTPResp, &resp); err != nil {
+	if err := jsonpb.UnmarshalString(idemHTTPResp, &idemResp); err != nil {
 		return nil, fmt.Errorf("CreateBooking idem: Could not parse HTTP response to pb3: %v", err)
 	}