expense reporting using outlook

Can anyone tell me how I can use outlook for expenditure reporting by a sales person? Outlook can create contact details and I’d like to add expenses as in the form of gas, food, telephone calls etc while a sales rep is visiting a contact/prospect.Hence is there a way of keeping track of expenses incurred by each sales rep for each contact?
Also can the sales rep add notes about meeting which can be relayed to the office once he is done with the contact all using outlook?
Thanks,
Sanjay