{{- if .Messages }}{{- if .System }}<start_system>{{ .System }}<end_message>{{- end }}{{- range .Messages }}<start_{{ .Role }}>{{ .Content }}<end_message>{{- end }}<start_assistant>{{- else }}{{ if .System }}<start_system>{{ .System }}<end_message>{{ end }}{{ if .Prompt }}<start_user>{{ .Prompt }}<end_message>{{ end }}<start_assistant>{{ .Response }}<end_message>{{- end }}