Entity Diagram Help - Crowfoot model

i have created the tables..


Customer
-------------
Customer ID (Unique)
Customer Name
Customer Contact details

Tours
-------

Tour name
Tour Description
Date Of Departure
Date Of arrival
No. of Adults
No. of Children

Agency
----------

Agency Code
Agency Name
Agency Address
Agency Contact
Agency manager

Payment (Booking)
--------------------

Receipt number
Date Of payment
Amount of payment
Overstay

Hotel
-------

Hotel name
Hotel Address
Hotel contact(Fax)
City

these are the tables... now agency will contact tours... one customer can have many tours.... should create a Entity Relationship Diagram (Crow Foot Model) and should indicate primary and foreign key.... then should identify the relations as well...(one to one, one to many, many to many)

plz help...thank u very much...