听一段材料，回答下面几个小题。
How will they travel?
A.By train.
B.By bus.
C.By plane.
When should the man book the traveling in advance?
A.Four months.
B.Eight months.
C.Ten months.
What is the purpose of the man?
A.To book a ticket.
B.To give some details.
C.To ask for information.