B: I don't know for certain.

A: Can I see you sometime this week?

B: I'm afraid my schedule is pretty tight.

A: When are you leaving?

B: Next Friday.

A: Going to the party tonight?

B: Sure thing.

A: Where are you staying?

B: I'm crashing with a friend of mine.

A: When's the next train to Boston?

B:  Two-fifteen.

A: When will you be back?

B: This coming Tuesday.

A: Will you be there this evening?

B:  Yes, I will.

A:  I'll come by, then.