1.
a travel coordinator: a person who makes travel plans for workers at a company
- We travel a lot on business, so our company has a travel coordinator.
- The travel coordinator has a stressful job at our company.
2.
to not be signed up for frequent flier miles: to not be a member of an airline's reward program
- I am not signed up for frequent flier miles because I don't travel a lot.
- She travels a lot, but she is not signed up for frequent flier miles.
3.
at the end of the week: Thursday or Friday
- We have a meeting at the end of the week.
- We get paid at the end of the week.