For this unit Refers to Student’s Book pages Writing headlines

Students work individually to answer the questions and then explain their 
answers in pairs.
 Answers
1  Yes. They both refer to the possibility of work on the photo shoot in Rio, and 
Charlotte asks the photographer to contact her for more information if he is 
interested in the job.
2  Email B is more informal. Email A has a more formal salutation and ending; it 
is written using 
we
 not 
I
 (
we
 referring to companies, rather than 
I
 which refers 
to individual people); it uses conditional forms; it does not contain any chatty 
small talk, abbreviations or other informal language.