The following dialog is for questions 1 to 3.

lrwan: I heard that you usually go jogging in the city park. Is that true?

Deni: It is. I go jogging every Tuesday and Thursday afternoon, but occasionally I do it on Sunday morning.

Irwan: How long do you usually go jogging?

Deni: There is no specific duration, but I will stop when I feel tired I usually spend an hour for jogging.

Irwan: That sounds interesting. Do you plan to jog tomorrow?

Deni: Yes, tomorrow is my jogging schedule.

Irwan: May I join you?

Deni: Certainly, but please come on time. I have another schedule after jogging. Anyway, why do you want to go jogging with me?

lrwan: Nothing, I just want to be healthier. My doctor tells me that doing regular exercise is very good for our body health.

Deni: That's right.

Irwan ask, "May I join you?"

What does he express?