Question

Muszę ułożyć pytania i odpowiedzi (dialog) - ma to dotyczyć wakacji.

How / How long / Who / What / Where / When / How much
(brakuje mi z What, When i How much, a ułożyłem to:)

How are you going to get there? - I'm going to travel by plane.
How long are you going to spend there? - I'm going to spend 2 weeks there.
Who are you going to travel with? - I'm going to travel with parents.
What ... ?
Where are you going to stay? - I'm going to stay in a five-star hotel.
When ... ?
How much ... ?

Answer 1

What are your plans for the summer? - I'm going on holiday to Tunisia.
How are you going to get there? - I'm going to travel by plane.
How long are you going to spend there? - I'm going to spend 2 weeks there.
Who are you going to travel with? - I'm going to travel with parents.
Where are you going to stay? - I'm going to stay in a five-star hotel.
When will you be back home? - I'll be back home in 3 weeks, because we want to stop for one week in Cracow on our way back.
How much is the trip going to cost you? - Not so much, less then we thought.

Nie wiem czy kolejność zdań ma znaczenie. Jeśli zdanie z "What..." ma być w tym miejscu, w którym pokazałeś to druga opcja:

How are you going to travel to Tunisia on your holiday? - I'm going to travel by plane.
How long are you going to spend there? - I'm going to spend 2 weeks there.
Who are you going to travel with? - I'm going to travel with parents.
What will you do when you get there? - I will go straight to the beach.
Where are you going to stay? - I'm going to stay in a five-star hotel.
When will you be back home? - I'll be back home in 3 weeks, because we want to stop for one week in Cracow on our way back.
How much is the trip going to cost you? - Not so much, less then we thought.