[speaker001:] What shall we do today?
[speaker002:] We'd better stay in the hotel, because the tour will begin tomorrow.
[speaker001:] Let's go out for some exercise, shall we?
[speaker002:] What an excellent idea!
[speaker001:] Shall we do some jogging?
[speaker002:] OK.
[speaker001:] I feel well now.
[speaker002:] Yes, some exercise is necessary for us.
[speaker001:] Quite right.