how call two methods in single service?

Question

Dear All,

 

am implemeting a wcf service with two mwthods,

 

 

initially my first webmethod was called in the load event send some imei numuber .am saving into that record into a table.after am sending a 'ok' message for successfull.once my responce was recived by end client then again they will call one more method for send the data based on first request imei number .so that i will store these data into other datatable .but

 

 

here i have a proble how can i  call two method in one method,

or

if my first request is success am giving responce as 'ok' .after recive this responce how can i wait for other request in a single webmethod .please give some code or any any examples..

 

am implementing these using c# code ..