Read the following text and answer the question.

Lala:	What time is it, Dedi?
Dedi:	It is 4.15 p.m.
Lala:	Sorry, I have to leave now. My mother asks me to buy a cake.
Dedi:	Is there any special occasion?
Lala:	Yes, today is my father's birthday and we are going to prepare a small party to celebrate  it at home.

Lala asks, "What time is it, Dedi?"

What does she express?