Replace multiple words in string

Question

I have multiple words I want to replace with values, whats the best way to do this?

Example: This is what I have done but it feels and looks so wrong

Answer 1

Improving on what @Evan said...

string s ="Dear , your booking is confirmed for the ";

string s1 = client.FullName;
string s2 = event.EventDate.ToString();

txtMessage.Text = s.Replace("", s1).Replace("EventDate", s2);