Struggling to keep the conversation flow. I am University student.whenever i try or get a chance to talk to a girl i couldn't think anything and that silence speaks to loud.

I wanna know how you guys keep the conversation smooth when i try to ask something they their reply are like one word or something why u wanna know but in some cases when they do reply it i got just like Okayyy what i supposed to do now should i ask another question or wait for her to ask me something then I ended up i gotta go after the awkward silence.

HELP ME GUYS