Conversation so far:
which city is called the city of flowers in pakistan
Peshawar's nickname is the City of Flowers.
Is the city of Peshawar a capital?
Peshawar is the capital of the Pakistani province of Khyber Pakhtunkhwa
how far does the city of peshawar date back to
Peshawar's recorded history dates back to at least 539 BCE, making it the oldest city in Pakistan
what is the population of the city of peshawar
The city of Peshawar has a population of 1,970,042 according to the 2017 census

Question: what languages are spoken in the city
Self-contained rewrite: what languages are spoken in the city of peshawar