As students of Tourism, you'll have to deal with customers in different situations, and this means that you'll have to write letters or emails giving details (about a hotel, a restaurant, a country, a town or city, for example) or answering people's requests or complaints. But that's not all. You'll have to speak with them, in person or on the phone.
http://www.ego4u.com/en/business-english/communicationIn the link above, you can find some useful vocabulary about oral and writing communication and you'll also find some information about the structure of the letters.
You could practice writing a letter, a hotel complaint, for example and then writing the apologising letter.