How long will the sales conference in London last?

M: I think we’ d better go over my schedule, Irene. Fm going to have a look at our European operation, as you know, and as I’ll be visiting a number of countries, I’d like you to make the bookings.
W: Right, Mr. Buck. I’ll take down the details.
M: Well, I’m leaving on Tuesday, April.15th, for London. F m going to attend a sales conference for our British representatives. That runs through Wednesday and Thursday, and then there’s a reception at Canada House on Thursday evening.
W: Are you going to meet the Ambassador, then?
M: I guess so. But the main thing is that on Friday morning, I have a meeting with the British Minister of Trade and Industry. We’ re going to discuss the site of our new plant in Scotland.
W: So when are you leaving for Paris?
M: First flight on Saturday morning. Fm planning to meet my wife diere. She’s going to fly over direct, arriving in the afternoon. Then we’ll have a relaxed weekend before I see Mr. Chambery, the European Manager,  on Monday. So from Paris on, I’ll need a double room.
W: How long are you going to stay in Paris, Mr. Buck?
M: Only till Monday evening. I’m going to Rome to see our plant diere on Tuesday, and on Wednesday I’m due in Madrid to inspect the new factory.
W: And that’s the last item on the agenda. So when are you coming back? Are you going to fly from Madrid?
M: Yes, on the first plane out on Thursday. We must be back on Friday, the 25th. It’s my daughter Sharon’s birthday.