Tasks about Travel Agent

For part 2, I found that the use case spec. did not mention about the tasks of travel agent. Does it mean that the role performed for travel agent is the SAME as the customer?

However, for "create profile" use case, the travel agent should create profile of customer rather than himself/herself. For "Pay for Itinerary" use cse, how did the travel agent pay for itinerary using customer's(??) credit card?

Can travel agent be omitted in the class diagram ?

Rgds,
Alexis

I am assuming that TA is equivalent to the customer in the system.
So profile will be customer's profile. But Login would be TA's login info.

Actually I am also not sure if we can omit TA in the class diagram. I'd rather keep it as USER so its generic.