Aba Nepali lie k ko agency bro? Afai jada bhai halyo ni.  

Anyways what kind of trek are you interested?  I am working as a travel guide, let me know.  I can send you the information about the treks/trips you are interested in. 

information i need

number of people 
destination (days you want to spend)
physical health of the ppl in the group
and time when you want to travel. 

Give me the details and I will send you an itinerary(ies. 

peace.