Sequence diagram for include use cases

[Eric Lefurge]

Hi
Just wondering who will be my actor to initiate the use case when creating the SEQUENCE DIAGRAM for scenarios which have include relationship with another use case. eg. Price Itinerary use case
Eric

[Daniel CarMichael]

I only see 2 actors in the Use Case Diagram given. You may even consider them as one depending on your design.

[Eric Lefurge]

Ok let me put it this way
I havent seen any examples of sequence diagrams for the include use case so please bear with me.
when one use case ends by invoking another use case , then in my sequence diagrams say my control object for use case A calls control object in use case B. Does it mean that the control object in use case B becomes the actor for use case B ???